Document:

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                                                                   Exhibit 10.12

                              EMPLOYMENT AGREEMENT

      AGREEMENT made as of January 15, 2004, by and between Builders
FirstSource, Inc., a Delaware corporation (the "Company"), and Donald F.
McAleenan (the "Executive").

      WHEREAS, the Company desires that Executive serve as the Senior Vice
President and General Counsel of the Company, and Executive desires to hold such
positions under the terms and conditions of this Agreement; and

      WHEREAS, the Board of Directors of the Company (the "Company Board") has
approved and authorized the Company to enter into this Agreement with Executive.

      NOW, THEREFORE, in consideration of the mutual covenants and agreements
set forth herein, and intending to be legally bound hereby, the parties agree as
follows:

      1. Employment. The Company hereby employs Executive, and Executive hereby
accepts employment with the Company, upon the terms and subject to the
conditions set forth herein.

      2. Term.

            (a) Subject to Section 2(b) hereof, the term of employment by the
Company of Executive pursuant to this Agreement (as the same may be extended,
the "Term") shall commence on January 15, 2004 (the "Effective Date"), and
terminate on the first anniversary thereof.

            (b) Commencing on the first anniversary of the Effective Date and on
each subsequent anniversary thereof, the Term shall automatically be extended
for one (1) additional year unless, not later than ninety days (90) prior to any
such anniversary date, either party hereto shall have notified the other party
hereto in writing that such extension shall not take effect.

      3. Position. During the Term, Executive shall serve as the Senior Vice
President and General Counsel of the Company, supervising the legal matters and
affairs of the Company and performing such other duties as the Company Board
shall determine.

      4. Duties. During the Term, Executive shall devote his full time and
attention during normal business hours to the business and affairs of the
Company, except vacations in accordance with the Company's policies and for
illness or incapacity, in accordance with Section 6 hereof.

      5. Salary and Bonus.

            (a) During the Term, the Company shall pay to Executive a base
salary at the rate of $_____________ per year (the "Base Salary"), subject to
adjustments pursuant to the terms of Section 5(b) hereof.
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            (b) On or prior to each anniversary hereof during the Term (assuming
the Term of the Agreement is extended pursuant to Section 2(b) hereof), the
Company Board or the Compensation Committee of the Company Board (the
"Compensation Committee") shall review the Base Salary and may, in its sole
discretion, increase the Base Salary based upon performance and merit.
Executive's Base Salary shall not be decreased below the amount set forth in
Section 5(a) hereof. The Base Salary shall be payable to Executive in
substantially equal installments in accordance with the Company's normal payroll
practices, but in no event less often than semi-monthly.

            (c) For the Company's fiscal year ending December 31, 2004, and for
each fiscal year during the Term thereafter, Executive shall be eligible to
receive an annual cash bonus equal to the amount provided for in the Company's
Annual Cash Incentive Plan ("Annual Incentive Plan") (which currently provides
for a target bonus percentage of 100% of Executive's Base Salary), which Annual
Incentive Plan is approved by the Company Board or the Compensation Committee
thereof. Executive's target bonus percentage under the Annual Incentive Plan
shall not be reduced below 100% of his Base Salary.

      6. Vacation, Holidays and Sick Leave. During the Term, Executive shall be
entitled to paid vacation, paid holidays and sick leave in accordance with the
Company's standard policies for its senior executive officers.

      7. Business Expenses. Executive shall be reimbursed for all reasonable and
necessary business expenses incurred by him in connection with his employment,
including, without limitation, expenses for travel and entertainment incurred in
conducting or promoting business for the Company upon timely submission by
Executive of receipts and other documentation as required by the Internal
Revenue Code of 1986, as amended (the "Code"), and in accordance with the
Company's normal expense reimbursement policies.

      8. Health, Welfare and Related Benefits. During the Term, Executive and
eligible members of his family shall be eligible to participate fully in all (a)
health and dental benefits and insurance programs; (b) life and short- and
long-term disability benefits and insurance programs; and (c) defined
contribution and equity compensation programs, all as available to senior
executive officers of the Company generally.

      9. Confidentiality, Non-Competition.

            (a) Executive acknowledges that: (I) the Executive has, and his
employment hereunder will require that Executive continue to have, access to and
knowledge of Confidential Information (as hereinafter defined); (ii) the direct
and indirect disclosure of any such Confidential Information to existing or
potential competitors of the Company or its subsidiaries would place the Company
at a competitive disadvantage and would do damage, monetary or otherwise, to the
Company's businesses; and (iii) the engaging by Executive in any of the
activities prohibited by this Section 9 may constitute improper appropriation
and/or use of such Confidential Information. Executive expressly acknowledges
that the Confidential Information constitutes a protectable business interest of
the Company. As used herein, the term "Confidential Information" shall mean
information of any kind, nature or description which is disclosed to or
otherwise known to the Executive as a direct or indirect consequence of his

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association with the Company, which information is not generally known to the
public or in the businesses in which such entities are engaged or which
information relates to specific investment opportunities within the scope of
their business which were considered by the Company during the Term; provided,
however, that "Confidential Information" shall not be deemed to include
information which (i) is or becomes generally available to the public other than
as a result of a disclosure by the Executive, (ii) becomes available to the
Executive on a non-confidential basis from a source other than the Company,
provided that such source is not bound by any contractual, legal or fiduciary
obligation with respect to such information or (iii) was in the Executive's
possession prior to being furnished by the Company.

            (b) During the Term of this Agreement and for a period of one year
after the termination of Executive's employment hereunder (upon expiration of
the Term or otherwise), Executive shall not, directly or indirectly, whether
individually, as a director, stockholder, owner, manager, member, partner,
employee, consultant, principal or agent of any business, or in any other
capacity, use for his own account, utilize or make known, disclose, furnish or
make available to any person, firm or corporation any of the Confidential
Information, other than to authorized officers, directors and employees of the
Company in the proper performance of the duties contemplated herein, or as
required by a court of competent jurisdiction or other administrative or
legislative body; provided that, prior to disclosing any of the Confidential
Information to a court or other administrative or legislative body, Executive
shall promptly notify the Company so that the Company may seek a protective
order or other appropriate remedy. Executive agrees to return all Confidential
Information, including all photocopies, extracts and summaries thereof, and any
such information stored electronically on tapes, computer disks or in any other
manner to the Company at any time upon request by the Company and upon the
termination of his employment for any reason.

            (c) During the Term of this Agreement and for a period of one year
after termination of Executive's employment hereunder (upon expiration of the
Term or otherwise), Executive shall not, directly or indirectly, own any
interest in, operate, join, control or participate as a partner, member,
director, manager, principal, officer, or agent of, enter into the employment
of, act as a consultant or advisor to, or perform any services for, any entity
(in those geographic areas in which the Company or any of its subsidiaries, as
of the date of termination of the Executive's employment hereunder, have
material operations) which entity is engaged in competition with the Company or
any of its subsidiaries. An entity shall be deemed to be engaged in competition
with the Company or its subsidiaries if it engages in a business which is the
same as or substantially similar to any business engaged in by the Company or
such subsidiary during the Term.

            (d) During the Term of this Agreement and for a period of two years
after termination of Executive's employment hereunder (upon expiration of the
Term or otherwise), Executive shall not, directly or indirectly, hire, solicit
or recruit for hire any employee of the Company or any of its subsidiaries or
encourage any employee of the Company or any of its subsidiaries to terminate
his or her employment in order to obtain employment by any other person, firm or
corporation.

            (e) Executive acknowledges that(A) in connection with rendering the
services to be rendered by Executive hereunder, Executive will have access to
and knowledge of

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Confidential Information, the disclosure of which would place the Company or its
subsidiaries at a competitive disadvantage, causing irreparable injury, and (B)
the services to be rendered by Executive hereunder are of a special and unique
character, which gives this Agreement a peculiar value to the Company, the loss
of which may not be reasonably or adequately compensated for by damages in an
action at law, and that a material breach or threatened breach by Executive of
any of the provisions contained in this Section 9 will cause the Company
irreparable injury. Executive, therefore, agrees that the Company shall be
entitled, in addition to any other right or remedy, to a temporary, preliminary
and permanent injunction, without the necessity of proving the inadequacy of
monetary damages or the posting of any bond or security, enjoining or
restraining Executive from any such violation or threatened violations.

            (f) Executive further acknowledges and agrees that due to the
uniqueness of his services and confidential nature of the information he will
possess, the covenants set forth herein are reasonable and necessary for the
protection of the business and goodwill of the Company; and it is the intent of
the parties hereto that if, in the opinion of any court of competent
jurisdiction, any provision set forth in this Section 9 is not reasonable in any
respect, such court shall have the right, power and authority to modify any and
all such provisions in such a manner as to such court shall appear not
unreasonable and to enforce the remainder of this Section 9 as so modified.

      10. Termination of Agreement. The employment by the Company of Executive
pursuant to this Agreement shall not be terminated prior to the end of the Term,
except as set forth in this Section 10.

            (a) By Mutual Consent.

                  (i)   The employment by the Company of Executive pursuant to
      this Agreement may be terminated at any time by the mutual written
      agreement of the Company and Executive.

                  (ii) In the event that (i) Executive's employment is
      terminated by mutual consent pursuant to this Section 10(a), and (ii)
      Executive and the Company determine at that time that it is in their
      mutual best interest for Executive to continue to be bound after his
      termination by the provisions of Section 9 of this Agreement for the
      periods set forth therein, then the parties may enter into an agreement to
      that effect, in exchange for which Executive would be entitled to the
      compensation provided for in Section 10(e) hereof.

            (b) Death. The employment by the Company of Executive pursuant to
this Agreement shall be terminated upon the death of Executive, in which event
Executive's spouse or heirs shall receive the following: (i) Executive's Base
Salary and benefits to be paid or provided to Executive under this Agreement
through the Date of Termination and (ii) continuation of Executive's Base Salary
and the health and welfare benefits provided for pursuant to Sections 8(a) and
8(b) hereof ("Health Benefits") for a period of one (1) year after the Date of
Termination.

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            (c) Disability. The employment by the Company of Executive pursuant
to this Agreement may be terminated by written notice to Executive at the option
of the Company in the event that as a result of the Executive's incapacity due
to physical or mental illness (which physical or mental illness shall be
confirmed in writing by a physician or other medical expert acceptable to both
parties), the Executive is unable to perform his duties, services and
responsibilities hereunder or shall have been absent from his duties hereunder
on a full-time basis for ninety (90) consecutive days or for an aggregate of
ninety (90) days or more in any six (6) month period, and within thirty (30)
days after notice is given by the Company (which notice may be delivered no
earlier than thirty days prior to the expiration of such ninety (90) consecutive
days or six month period, as the case may be), the Executive shall not have
returned to the performance of his duties hereunder on a full-time basis. In the
event the employment by the Company of Executive is terminated pursuant to this
Section 10(c), Executive shall be entitled to receive the following: (i) all
Base Salary and benefits to be paid or provided to Executive under this
Agreement through the Date of Termination and (ii) continuation of his Base
Salary and Health Benefits for a period of one (1) year after the Date of
Termination; provided, however, that amounts payable to Executive under this
Section 10(c) shall be reduced by the proceeds of any short- and/or long-term
disability payments under the Company plans referred to in Section 8 hereof to
which Executive may be entitled during such period.

            (d) By the Company for Cause. The employment of Executive pursuant
to this Agreement may be terminated by the Company by written notice to
Executive ("Notice of Termination") for Cause (as hereafter defined). In the
event the employment by the Company of Executive is terminated pursuant to this
Section 10(d), Executive shall be entitled to receive all Base Salary and
benefits to be paid or provided to Executive under this Agreement through the
Date of Termination and no more.

            (e) By the Company Without Cause. The employment by the Company of
Executive pursuant to this Agreement may be terminated by the Company at any
time without Cause by delivery of a Notice of Termination to Executive. In the
event the employment by the Company of Executive is terminated pursuant to this
Section 10(e), Executive shall be entitled to receive the following: (i) all
Base Salary and benefits to be paid or provided to Executive under this
Agreement through the Date of Termination, (ii) continuation of his Base Salary
and Health Benefits for a period of one (1) year after the Date of Termination,
and (iii) an amount equal to his Average Bonus Compensation (as hereafter
defined).

            (f) By Executive. The employment of Executive by the Company
pursuant to this Agreement may be terminated by Executive by written notice to
the Company of his resignation (a "Notice of Resignation") at any time. In the
event the employment by the Company of Executive is terminated pursuant to this
Section 10(f), Executive shall be entitled to receive all Base Salary and
benefits to be paid or provided to Executive under this Agreement through the
Date of Termination and no more; provided, however, that if Executive terminates
his employment due to (i) a material adverse diminution of Executive's job title
or responsibilities from those currently in effect; or (ii) a relocation of
Executive's principal place of employment more than 100 miles from its current
location without his consent, then Executive shall instead be entitled to the
compensation provided for in Section 10(e) hereof.

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            (g) Non-Renewal. In the event that at any time during the Term (as
it may be extended) the Company notifies Executive of its intent not to renew
this Agreement pursuant to Section 2(b) hereof, and Executive then delivers a
Notice of Resignation to the Company within ninety (90) days of receipt of such
notice of non-renewal, Executive shall be entitled to receive the following: (i)
all Base Salary and benefits to be paid or provided to Executive under this
Agreement through the Date of Termination, (ii) continuation of his Base Salary
and Health Benefits for a period of one (1) year after the Date of Termination,
and (iii) an amount equal to his Average Bonus Compensation.

            (h) Previously Earned Bonus. Notwithstanding any other provision of
this Section 10, in the event that Executive's employment pursuant to this
Agreement is terminated at a time when Executive shall have earned a bonus under
the Annual Incentive Plan for performance during the prior fiscal year which has
not yet been paid, Executive shall be paid such bonus in addition to the amounts
otherwise provided for in this Section 10. Such bonus shall be paid in
accordance with the Company's normal practices.

            (i) Date of Termination. Executive's Date of Termination shall be:
(i) if the parties hereto mutually agree to terminate this Agreement pursuant to
Section 10(a) hereof, the date designated by the parties in such agreement; (ii)
if Executive's employment by the Company is terminated pursuant to Section
10(b), the date of Executive's death; (iii) if Executive's employment by the
Company is terminated pursuant to Section 10(c), the last day of the applicable
period referred to in Section 10(c) hereof; (iv) if Executive's employment by
the Company is terminated pursuant to Section 10(d), the date on which a Notice
of Termination is given; and (v) if Executive's employment by the Company is
terminated pursuant to Sections 10(e), 10(f) or 10(g), the date the Notice of
Termination or Notice of Resignation, as the case may be, is given.

            (j) Payment of Post-Termination Compensation. After Executive's Date
of Termination, all payments of Base Salary and Average Bonus Compensation to
Executive pursuant to this Section 10 shall be paid in accordance with the
Company's normal payroll practices, but in no event less often than
semi-monthly. In the event of a breach by Executive of Section 9 of this
Agreement during the applicable period following his Date of Termination,
Executive agrees (i) that the Company shall have no further obligation to make
any payments to Executive under Section 10 of the Agreement and (ii) that any
payments of Base Salary or Average Bonus Compensation previously made to
Executive after his Date of Termination shall be returned to the Company.

      11. Representations.

            (a) The Company represents and warrants that this Agreement has been
authorized by all necessary corporate action of the Company and is a valid and
binding agreement of the Company enforceable against the Company in accordance
with its terms.

            (b) Executive represents and warrants that he is not a party to any
agreement or instrument which would prevent him from entering into or performing
his duties in any way under this Agreement and that this Agreement is a valid
and binding agreement of Executive enforceable against Executive in accordance
with its terms.

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      12. Successors. This Agreement is a personal contract and the rights and
interests of Executive hereunder may not be sold, transferred, assigned,
pledged, encumbered, or hypothecated by him, except as otherwise expressly
permitted by the provisions of this Agreement. This Agreement shall inure to the
benefit of and be enforceable by Executive and his personal or legal
representatives, executors, administrators, successors, heirs, distributees,
devisees and legatees. If Executive should die while any amount would still be
payable to him hereunder had Executive continued to live, all such amounts,
unless otherwise provided herein, shall be paid in accordance with the terms of
this Agreement to his devisee, legatee or other designee or, if there is no such
designee, to his estate.

      13. Entire Agreement. This Agreement contains all the understandings
between the parties hereto pertaining to the matters referred to herein, and
supersedes any other undertakings and agreements (other than any stock option
agreement between Executive and the Company), whether oral or in writing,
previously entered into by them with respect thereto. Executive represents that,
in executing this Agreement, he does not rely and has not relied upon any
representation or statement made by the Company not set forth herein with regard
to the subject matter or effect of this Agreement or otherwise.

      14. Termination; Amendment or Modification; Waiver.

            (a) This Agreement may be terminated at any time by mutual written
consent of the Company and Executive.

            (b) No provision of this Agreement may be amended or waived unless
such amendment or waiver is agreed to in writing, signed by Executive and by a
duly authorized officer of the Company. No waiver by any party hereto of any
breach by another party hereto of any condition or provision of this Agreement
to be performed by such other party shall be deemed a waiver of a similar or
dissimilar condition or provision at the same time, any prior time or any
subsequent time.

      15. Notices. All notices and other communications required or permitted to
be given hereunder shall be in writing and shall be (i) delivered by hand, (ii)
delivered by a nationally recognized commercial overnight delivery service,
(iii) mailed postage prepaid by first class mail or (iv) transmitted by
facsimile transmitted to the party concerned at the address or telecopier number
set forth below:

            To Executive at:

                  Builders FirstSource, Inc.
                  2001 Bryan Street, Suite 1600
                  Dallas, Texas  75201
                  Attention:  Donald F. McAleenan

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            To the Company at:

                  Builders FirstSource, Inc.
                  2001 Bryan Street, Suite 1600
                  Dallas, Texas  75201
                  Attention:  General Counsel

            with copies to:

                  JLL Partners
                  450 Lexington Avenue
                  New York, New York  10017
                  Facsimile: (212) 286-8626
                  Attention:  Ramsey Frank

                  and

                  Skadden, Arps, Slate, Meagher & Flom LLP
                  One Rodney Square
                  P.O. Box 636
                  Wilmington, Delaware  19899
                  Facsimile: (302) 651-3001
                  Attention:  Robert B. Pincus

      Such notices shall be effective: (i) in the case of hand deliveries when
received; (ii) in the case of an overnight delivery service, on the next
business day after being placed in the possession of such delivery service, with
delivery charges prepaid; (iii) in the case of mail, seven (7) days after
deposit in the postal system, first class mail, postage prepaid; and (iv) in the
case of facsimile notices, when electronic confirmation of receipt is received
by the sender. Any party may change its address and telecopy number by written
notice to the other given in accordance with this Section 15; provided, however,
that such change shall be effective when received.

      16. Severability. If any provision or clause of this Agreement or the
application of any such provision or clause to any party or circumstances shall
be determined by any court of competent jurisdiction to be invalid and
unenforceable to any extent, the remainder of this Agreement or the application
of such provision or clause to such person or circumstances other than those to
which it is so determined to be invalid and unenforceable, shall not be affected
thereby, and each provision or clause hereof shall be validated and shall be
enforced to the fullest extent permitted by law.

      17. Survivorship. The respective rights and obligations of the parties
hereunder shall survive any termination of this Agreement to the extent
necessary to the intended preservation of such rights and obligations.

      18. Governing Law. This Agreement will be governed by and construed in
accordance with the laws of the State of Delaware, without regard to its
conflicts of law principles.

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      19. Headings. All descriptive headings of sections and paragraphs in this
Agreement are intended solely for convenience, and no provision of this
Agreement is to be construed by reference to the heading of any section or
paragraph.

      20. Withholding. All payments to Executive under this Agreement shall be
reduced by all applicable withholding required by federal, state or local law.

      21. Specific Performance. Each party hereto acknowledges that money
damages would be both incalculable and an insufficient remedy for any breach of
this Agreement by such party and that any such breach would cause the other
parties, irreparable harm. Accordingly, each party hereto also agrees that, in
the event of any breach or threatened breach of the provisions of this Agreement
by such party, the other parties shall be entitled to equitable relief without
the requirement of posting a bond or other security, including in the form of
injunctions and orders for specific performance, in addition to all other
remedies available to such other parties at law or in equity.

      22. Counterparts. This Agreement may be executed in counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

      23. Definitions.

            (a) "Cause" means the determination, in good faith, by the Company
Board, after notice to Executive that one or more of the following events has
occurred: (i) any act of gross negligence, fraud, willful misconduct or moral
turpitude by Executive materially injuring the interest, business or reputation
of the Company, or any of its parents, subsidiaries or affiliates; (ii)
Executive's conviction of any felony; (iii) violation by Executive of the
Company's Drug Policy; (iv) any misappropriation or embezzlement of the property
of the Company, or any of its parents, subsidiaries or affiliates; or (v) any
material breach by Executive of this Agreement, including, without limitation, a
material breach of Section 9 hereof, which breach, to the extent it is capable
of being cured, remains uncorrected for a period of thirty (30) days after
receipt by Executive of written notice from the Company setting forth such
breach.

            (b) "Average Bonus Compensation" shall mean an amount equal to the
average of the annual bonus amounts earned by Executive under the Company's
Annual Incentive Plan during the two most recent fiscal years ended prior to
Executive's Date of Termination.

                            [SIGNATURE PAGE FOLLOWS]

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      IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Employment Agreement as of the date first above written.

                              BUILDERS FIRSTSOURCE, INC.

                              By:   /s/ Floyd Sherman
                                    -----------------
                                    Floyd Sherman
                                    Chief Executive Officer

                              EXECUTIVE

                              /s/ Donald F. McAleenan
                              -----------------------
                              Donald F. McAleenan

                                       10<PAGE>
                                                                     Exhibit 4.4

                                     FORM OF
                           SECOND AMENDED AND RESTATED
                             STOCKHOLDERS AGREEMENT

            This   SECOND   AMENDED   AND   RESTATED   STOCKHOLDERS    AGREEMENT
("Agreement"),  dated as of April ___, 2005, among JLL Building Products, LLC, a
Delaware limited liability company that was formerly know as Stonegate Resources
Holdings,  LLC, Builders FirstSource,  Inc., a Delaware corporation and majority
owned  subsidiary  of JLL Building  Products (the  "Company"),  Floyd F. Sherman
("Sherman"),  Charles L. Horn ("Horn"), Kevin P. O'Meara ("O'Meara"), and Donald
F.  McAleenan  ("McAleenan"),  shall  be  effective  upon  consummation  of  the
Company's Initial Public Offering (as defined herein).

                               W I T N E S S E T H

            WHEREAS,  JLL Building  Products (as defined herein) owns a majority
of the issued and outstanding  shares of common stock, par value $.01 per share,
of the Company ("Common Stock"); and

            WHEREAS, on September 5, 2001, each of the parties entered into that
certain  Stockholders  Agreement  ("Original  Agreement") to memorialize certain
agreements  of the parties  with  respect to the shares of Common Stock owned by
JLL Building  Products and the Other  Stockholders (as defined  herein),  all in
accordance with the terms and conditions set forth therein; and

            WHEREAS, on February 25, 2004, each of the parties entered into that
certain Amended and Restated  Stockholders  Agreement  ("Amended  Agreement") to
amend certain provisions of the Original Agreement; and

            WHEREAS,  in connection with the Company's  proposed  Initial Public
Offering, each of the parties desires to amend and restate the Amended Agreement
conditioned  upon,  subject to and effective upon  consummation of the Company's
Initial  Public  Offering,  in order to  memorialize  certain  agreements of the
parties with respect to the  registration  under the  Securities Act (as defined
herein) of shares of Common Stock owned by JLL  Building  Products and the Other
Stockholders and to revise certain provisions of the Amended Agreement.

            NOW,  THEREFORE,  in  consideration  of  the  mutual  covenants  and
agreements set forth herein and for good and valuable consideration, the receipt
of which is hereby acknowledged, the parties agree as follows:

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                                   ARTICLE I

                               CERTAIN DEFINITIONS

            For purposes of this  Agreement,  the following terms shall have the
following meanings:

                  (a) The term "Board"  shall mean the Board of Directors of the
Company.

                  (b)  The  term  "Commission"  shall  mean  the  United  States
Securities and Exchange Commission or any successor agency.

                  (c) The term "Exchange Act" shall mean the Securities Exchange
Act of 1934, as amended, and the rules and regulations promulgated thereunder.

                  (d) The term "Fair  Market  Value"  shall mean the fair market
value per share of the Common Stock as of a particular  date  determined as: (i)
the average  closing  sales price per share of the Common  Stock on the national
securities  exchange on which the Common Stock is  principally  traded,  for the
last five preceding dates on which there was a sale of such Common Stock on such
exchange;  or  (ii)  if the  shares  of  Common  Stock  are  then  traded  in an
over-the-counter market, the average of the closing bid and asked prices for the
shares of Common Stock in such  over-the-counter  market for the last  preceding
five dates on which there was a sale of such  Common  Stock in such  market;  or
(iii) if the shares of Common Stock are not then listed on a national securities
exchange or traded in an  over-the-counter  market,  such value as the Board, in
its good faith judgment, shall determine.

                  (e) The term "Initial  Public  Offering"  shall mean the first
Public Offering of shares of Common Stock.

                  (f) The term "JLL Building  Products"  shall mean JLL Building
Products,  LLC and any Permitted  Transferees  thereof to whom any of the Shares
are Transferred in accordance with Article III hereof.

                  (g) The term "Other  Stockholders"  shall mean Sherman,  Horn,
O'Meara, and McAleenan and any Permitted  Transferees thereof to whom any of the
Shares are Transferred in accordance with Article III hereof.

                  (h) The term "Permitted  Transferee"  shall mean, with respect
to each  Stockholder  bound  by the  terms  of this  Agreement,  (i) any  lineal
descendant  of such  Stockholder  or any  Permitted  Transferee  of such  lineal
descendent;   (ii)  the  Company;   (iii)  in  the  event  of  the  dissolution,
liquidation,  or winding up of any such  Stockholder  that is a partnership or a
corporation,  the  partners  of a  partnership  that  is such  Stockholder,  the
stockholders  of  a  corporation  that  is  such  Stockholder,  or  a  successor
partnership  all of the partners of which or a successor  corporation all of the
stockholders of which are the Persons who were the partners of such partnership,
or the

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stockholders of such corporation  immediately  prior to the dissolution,
liquidation,   or  winding  up  of  such  Stockholder;   (iv)  a  transferee  by
testamentary or intestate disposition;  (v) a transferee by inter vivos transfer
to the transferring Person's spouse, children,  and/or other lineal descendants;
(vi) a trust  transferee or family limited  partnership by inter vivos transfer,
the  beneficiaries  or partners of which are the  transferring  Person,  spouse,
children, and/or other lineal descendants;  (vii) a successor nominee or trustee
for the beneficial  owner of the Shares for which such Person acts as nominee or
trustee,  as the case may be; or (viii)  Permitted  Transferees of any Permitted
Transferee.

                  (i)  The  term  "Person"  shall  mean  any  individual,  firm,
corporation,  partnership, limited liability company, trust, or other entity and
shall include any successor (by merger or otherwise) of such entity.

                  (j) The term "Public Offering" shall mean a public offering of
equity securities of the Company pursuant to an effective registration statement
under the Securities Act (other than (i) a  registration  statement  filed under
Regulation  A or on  form  S-4 or any  successor  form  or  (ii) a  registration
statement filed on Form S-8 or any successor form).

                  (k) The term  "Registrable  Securities" shall mean the Shares,
provided,  however,  that  as to any  particular  Registrable  Securities,  such
securities  shall cease to be  Registrable  Securities  when (i) a  registration
statement registering such securities under the Securities Act has been declared
effective and such  securities  have been sold or otherwise  transferred  by the
holder thereof pursuant to such effective registration  statement;  or (ii) such
securities  are sold in accordance  with Rule 144 (or any  successor  provision)
promulgated  under the Securities  Act; or (iii) such securities are transferred
under  circumstances  in which any  legend  borne by the  certificates  for such
securities  relating  to  restrictions  on  transferability  thereof,  under the
Securities Act or otherwise, is removed by the Company.

                  (l) The term  "Registration  Period"  shall  mean  the  period
commencing  on the  Registration  Period  Commencement  Date and  ending  on the
seventh anniversary of the consummation of the Initial Public Offering.

                  (m) The term  "Registration  Period  Commencement  Date" shall
mean the date that is six  months  following  the  closing  date of the  Initial
Public  Offering (or, if later,  the date upon which the  Stockholder's  lock-up
agreement  entered into with the  underwriters  in  connection  with the Initial
Public Offering expires).

                  (n) The term  "Requisite  Amount"  shall  mean such  number of
shares of  Registrable  Securities  having an  aggregate  Fair  Market  Value of
$125,000.

                  (o) The term "Securities Act" shall mean the Securities Act of
1933, as amended, and the rules and regulations promulgated thereunder.

                  (p) The term  "Shares"  shall  mean (i) all  shares  of Common
Stock owned by the Stockholders as of the date hereof; (ii) additional shares of
Common Stock acquired by the  Stockholders  in any manner after the date hereof;
and (iii) any

                                       3

<PAGE>

shares of Common Stock issuable upon exercise of vested options granted to any
Stockholder (including any options vesting as a result of any Transfer).

                  (q) The term "Stockholders" shall mean JLL Building Products,
Sherman, Horn, O'Meara, and McAleenan and any Permitted Transferees thereof to
whom any of the Shares are Transferred in accordance with Article III hereof.

                  (r) The term "Transfer" shall mean any voluntary or
involuntary attempt to, directly or indirectly through the transfer of interests
in controlled Affiliates or otherwise, offer, sell, assign, transfer, grant a
participation in, pledge, or otherwise dispose of any Shares, or the
consummation of any such transactions, or the soliciting of any offers to
purchase or otherwise acquire, or taking a pledge of, any of the Shares;
provided, however, that the transfer of an interest in any of the Stockholders
shall not be deemed to be a transfer.

                                   ARTICLE II

                         REPRESENTATIONS AND WARRANTIES

            SECTION 2.01 REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDERS.
Each Stockholder individually represents and warrants to the Company the
following:

                  (a) Such Stockholder has the requisite power and authority to
execute and deliver this Agreement and to consummate the transactions
contemplated hereby in accordance with the terms hereof. The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly authorized by all necessary action on the part of such
Stockholder; and

                  (b) This Agreement has been duly and validly executed and
delivered by such Stockholder and is, assuming due execution and delivery hereof
by the Company and that the Company has full legal power and right to enter into
this Agreement, a valid and binding obligation of such Stockholder, enforceable
against such Stockholder in accordance with its terms, except as enforcement
thereof may be limited by the effect of bankruptcy, insolvency, reorganization,
moratorium, fraudulent conveyance, or similar laws affecting the enforcement of
creditors' rights generally, and subject to principles of equity and public
policy; and

                  (c) Such Stockholder agrees to the imprinting, so long as
required by law, of legends on certificates representing all of the Shares to
the following effect:

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS
OF ANY STATE. THE SECURITIES MAY NOT BE TRANSFERRED EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES
LAWS OR PURSUANT TO AN APPLICABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS
OF SUCH ACT AND SUCH LAWS.

                                       4

<PAGE>

         THE SALE, ASSIGNMENT, HYPOTHECATION, PLEDGE, ENCUMBRANCE, OR OTHER
DISPOSITION (EACH A "TRANSFER") OF ANY OF THE SECURITIES REPRESENTED BY THIS
CERTIFICATE ARE RESTRICTED BY THE TERMS OF THE SECOND AMENDED AND RESTATED
STOCKHOLDERS AGREEMENT, DATED AS OF [ ------------------ ], 2005, AMONG JLL
BUILDING PRODUCTS, LLC, BUILDERS FIRSTSOURCE, INC., FLOYD F. SHERMAN, CHARLES L.
HORN, KEVIN P. O'MEARA, AND DONALD F. MCALEENAN. THE COMPANY WILL NOT REGISTER
THE TRANSFER OF SUCH SECURITIES ON THE BOOKS OF THE COMPANY UNLESS AND UNTIL THE
TRANSFER HAS BEEN MADE IN COMPLIANCE WITH THE TERMS OF THE STOCKHOLDERS
AGREEMENT.

            SECTION 2.02 REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The
Company represents and warrants to each of the Stockholders the following:

                  (a) The Company is a corporation duly organized and validly
existing in good standing under the laws of the State of Delaware and has the
requisite corporate power and authority to execute and deliver this Agreement
and to consummate the transactions contemplated hereby in accordance with the
terms hereof. The execution and delivery of this Agreement and the consummation
of the transactions contemplated hereby have been duly authorized by all
necessary corporate action on the part of the Company; and

                  (b) This Agreement has been duly and validly executed and
delivered by the Company and is, assuming due execution and delivery hereof by
each of the Stockholders and that each of the Stockholders has full legal power
and right to enter into this Agreement, a valid and binding obligation of the
Company, enforceable against the Company in accordance with its terms, except as
enforcement thereof may be limited by the effect of bankruptcy, insolvency,
reorganization, moratorium, fraudulent conveyance, or similar laws affecting the
enforcement of creditors' rights generally, and subject to principles of equity
and public policy.

                                  ARTICLE III

                               TRANSFER OF SHARES

            SECTION 3.01 GENERAL RESTRICTIONS. Prior to the Registration Period
Commencement Date, without the prior written consent of JLL Building Products,
none of the Other Stockholders nor any of their Permitted Transferees may
Transfer any Shares except for (i) Transfers to any of their Permitted
Transferees; provided, however, that, prior to any such Transfer of Shares, such
Permitted Transferee shall agree in writing to take such Shares subject to, and
to comply with, all of the provisions of this Agreement, a copy of which
Agreement shall be executed by such Permitted Transferee and filed with the
Secretary of the Company and shall include the address of such Permitted
Transferee to which notices hereunder shall be sent or (ii) Transfers pursuant
to the provisions of Sections 3.04 and 3.05 hereof.

                                       5

<PAGE>

            SECTION 3.02 COMPLIANCE WITH SECURITIES LAWS. Each Stockholder
agrees that every Transfer of his Shares shall comply with all federal, state,
and local securities laws applicable to such Transfer.

            SECTION 3.03 TRANSFERS NOT IN COMPLIANCE. In the event of any
purported or attempted Transfer of Shares by a Stockholder that does not comply
with this Agreement, the purported transferee or successor by operation of law
shall not be deemed to be a stockholder of the Company for any purpose and shall
not be entitled to any of the rights of a stockholder, including, without
limitation, the right to vote the Shares or to receive a certificate for the
Shares or any dividends or other distributions on or with respect to the Shares.

            SECTION 3.04 TAG-ALONG RIGHTS. Except as provided below, if, at any
time prior to the Registration Period Commencement Date, JLL Building Products
proposes to Transfer directly or indirectly (through the transfer of interests
in JLL Building Products, its controlling stockholders, or otherwise) in one or
more transactions an amount equal to more than fifty percent (50%) of the number
of shares of Common Stock it holds immediately after the Initial Public Offering
to any Person, JLL Building Products shall provide each Other Stockholder (each
a "Notice Recipient") and the Company with not less than twenty (20) days' prior
written notice (the "Sale Notice") of such proposed Transfer, which notice shall
include all of the terms and conditions of such proposed Transfer and which
notice shall identify such purchaser; and the Notice Recipient shall have the
option, exercisable by written notice to JLL Building Products within ten (10)
days of receipt of the Sale Notice, to require JLL Building Products to arrange
for such purchaser or purchasers to purchase the same percentage (the
"Percentage") of the Shares then owned by such Notice Recipient as the ratio of
the total number of shares of Common Stock that are to be Transferred by JLL
Building Products pursuant to the proposed Transfer (including any previously
Transferred shares of Common Stock if pursuant to multiple Transfers) to the
total number of shares of Common Stock owned by JLL Building Products
immediately prior to such Transfer, or any lesser amount of Shares as such
Notice Recipient shall desire, together with JLL Building Products' shares of
Common Stock at the same time as, and upon the same terms and conditions at
which, JLL Building Products sells its shares of Common Stock. If a Notice
Recipient shall so elect, JLL Building Products agrees that it shall either (a)
arrange for the proposed purchaser or purchasers to purchase all or a portion
(as such Notice Recipient shall specify) of the same Percentage of the Shares
then owned by such Notice Recipient at the same time as and upon the same terms
and conditions at which JLL Building Products sells its shares of Common Stock,
and, provided that, if such purchaser or purchasers shall elect to purchase only
such aggregate number of shares of Common Stock as originally agreed with JLL
Building Products, then the number of shares of Common Stock to be sold by JLL
Building Products and the number of Shares to be sold by all Notice Recipients
electing to participate in the proposed Transfer shall be reduced PRO RATA to
such aggregate number; or (b) not effect the proposed Transfer to such purchaser
or purchasers. In the event that a Notice Recipient does not exercise its right
to participate in such Transfer or declines so to participate, JLL Building
Products shall have 120 days from the date of such Sale Notice to consummate the
transaction on

                                       6

<PAGE>

the terms set forth therein without being required to provide an additional Sale
Notice to the remaining Other Stockholders and comply with the terms of this
Section 3.04.

            SECTION 3.05 DRAG-ALONG RIGHTS. If at any time prior to the
Registration Period Commencement Date, JLL Building Products proposes to
Transfer all or substantially all of its shares of Common Stock (other than to a
Permitted Transferee), JLL Building Products shall have the right, upon not less
than twenty (20) days' prior written notice of such proposed sale (the "Purchase
Notice"), which notice shall include all of the terms and conditions of such
proposed sale and which notice shall identify the proposed purchaser or
purchasers of such shares of Common Stock ("Drag Along Purchaser(s)"), to
require each of the Other Stockholders to sell to the Drag Along Purchaser(s)
that number of Shares ("Call Shares") equal to the product, rounded down to the
nearest whole number, of (a) a fraction, the numerator of which is the total
number of shares of Common Stock proposed to be sold by JLL Building Products,
together with its Permitted Transferees, and the denominator of which is the
total number of shares of Common Stock then owned by JLL Building Products
multiplied by (b) the number of Shares then owned by such Other Stockholder. If
JLL Building Products shall so elect, JLL Building Products shall arrange for
such Drag Along Purchaser(s) to purchase the Call Shares at the same time as and
upon the same terms and conditions at which JLL Building Products sells its
shares of Common Stock. Upon receipt of the Purchase Notice, each of the Other
Stockholders shall cooperate with JLL Building Products and otherwise take, or
cause to be taken, all actions and do, or cause to be done, all things necessary
or appropriate to enter into, consummate, and make effective the sale and
purchase of the Call Shares, together with JLL Building Products' shares of
Common Stock being so Transferred.

            SECTION 3.06 EFFECT OF NOTICES. Notwithstanding any provision hereof
to the contrary, the giving to any Stockholder of any Sale Notice or any
Purchase Notice shall not obligate JLL Building Products to consummate or effect
any transaction referred to therein, and JLL Building Products shall be free to
abandon any such transaction prior to the effectiveness thereof. If any such
transaction is so abandoned, the Other Stockholders and JLL Building Products
shall continue to be subject to the terms of this Article III with respect to
the Shares included in such Sale Notice or Purchase Notice.

                                   ARTICLE IV

                               REGISTRATION RIGHTS

            SECTION 4.01 DEMAND REGISTRATIONS.

                  (a) REQUESTS FOR REGISTRATION. At any time after the
Registration Period Commencement Date, subject to the conditions set forth
herein, JLL Building Products (or, in the event that JLL Building Products has
distributed its Registrable Securities to its members or the partners of its
members, the holders of a majority of Registrable Securities then owned by all
of such members and partners, which for purposes of this Article IV shall have
all of the rights and obligations of JLL

                                       7

<PAGE>

Builing Products) shall be entitled to make a written request of the Company (a
"Demand") for registration under the Securities Act of all or part of its
Registrable Securities (a "Demand Registration"). Such Demand shall specify: (i)
the aggregate number of Registrable Securities requested to be registered;
provided that such Registrable Securities must have an aggregate Fair Market
Value of at least $10,000,000; and (ii) the intended method of distribution in
connection with such Demand Registration to the extent then known. Within ten
(10) business days of receipt of a Demand, the Company shall give written notice
of such Demand to each Other Stockholder and shall include in such registration
all Registrable Securities with respect to which the Company has received a
written request for inclusion therein within ten (10) business days of the
receipt by such Stockholder of the Company's notice as required by Section 4.02
of this Agreement.

                  (b) NUMBER OF DEMANDS. JLL Building Products shall be entitled
to four (4) Demand Registrations.

                  (c) SATISFACTION OF OBLIGATIONS. Subject to the provisions of
Section 4.03, a registration shall not be treated as a permitted Demand for a
Demand Registration until (i) the applicable registration statement under the
Securities Act has been filed with the Commission with respect to such Demand
Registration (which shall include any registration statement that is not
withdrawn by holders of Registrable Securities in the circumstances contemplated
by Section 4.03); and (ii) such registration statement shall have been
maintained continuously effective for a period of at least one hundred twenty
(120) days or such shorter period during which all Registrable Securities
included therein have been disposed of thereunder in accordance with the method
of distribution set forth in such registration statement.

                  (d) AVAILABILITY OF SHORT FORM REGISTRATIONS. The Company
shall use its commercially reasonable efforts to comply with the requirements
for use of short form registration for the sale of Registrable Securities under
the Securities Act.

                  (e) RESTRICTIONS ON DEMAND REGISTRATIONS. The Company shall
not be obligated (i) in the case of a Demand Registration, to maintain the
effectiveness of a registration statement under the Securities Act for a period
longer than 120 days; or (ii) to effect any Demand Registration within one
hundred eighty (180) days of the effective date of (A) a registration in which
JLL Building Products and the Other Stockholders were given "piggyback" rights
pursuant to Section 4.02 hereof (provided that, with respect to such a
registration in which such piggyback rights were exercised, JLL Building
Products and the Other Stockholders were permitted to include in such
registration twenty-five percent (25%) of the Registrable Securities that such
Stockholder sought to include therein) or (B) any other Demand Registration. In
addition, the Company shall be entitled to postpone (upon written notice to JLL
Building Products) for up to ninety (90) days the filing or the effectiveness of
a registration statement in respect of a Demand (but no more than once in any
period of twelve (12) consecutive months) if the Board determines in good faith
and in its reasonable judgment that effecting the Demand Registration in respect
of such Demand would have a material adverse effect on any proposal or plan by
the Company to engage in any debt or equity offering, material

                                       8

<PAGE>

acquisition, or disposition of assets (other than in the ordinary course of
business) or any merger, consolidation, tender offer, or other similar
transaction or otherwise would be materially detrimental to the Company. In the
event of a postponement by the Company of the filing or effectiveness of a
registration statement in respect of a Demand, JLL Building Products shall have
the right to withdraw such Demand in accordance with Section 4.03 hereof.

                  (f) PARTICIPATION IN DEMAND REGISTRATIONS. Except with the
prior written consent of JLL Partners, the Company may not include any
securities to be sold for the Company's account in a Demand Registration. If, in
connection with a Demand Registration, any managing underwriter advises the
Company and JLL Building Products that, in its opinion, the inclusion of all the
Registrable Securities and, if authorized pursuant to this Article IV, other
securities of the Company, in each case, sought to be registered in connection
with such Demand Registration would adversely affect the marketability of the
Registrable Securities sought to be sold pursuant thereto, then the Company
shall include in the registration statement applicable to such Demand
Registration only such securities as the Company and JLL Building Products are
advised by such underwriter can be sold without such an effect (the "Maximum
Demand Number"), as follows and in the following order of priority:

                        (i) first, the number of Registrable Securities sought
            to be registered by JLL Building Products and the Other
            Stockholders, PRO RATA in proportion to the number of Registrable
            Securities sought to be registered by each such Stockholder; and

                        (ii) second, if the number of Registrable Securities to
            be included under clause (i) above is less than the Maximum Demand
            Number, the number of securities sought to be included by each other
            seller, PRO RATA in proportion to the number of securities sought to
            be sold by all such other sellers, which in the aggregate, when
            added to the number of securities to be included pursuant to clause
            (i) above, equals the Maximum Demand Number.

                  (g) SELECTION OF UNDERWRITERS. If JLL Building Products
requests that such Demand Registration be an underwritten offering, then JLL
Building Products shall select a nationally recognized underwriter or
underwriters to manage and administer such offering, such underwriter or
underwriters, as the case may be, to be subject to the approval of the Company,
which approval shall not be unreasonably withheld or delayed.

                  (h) OTHER REGISTRATIONS. If the Company has received a Demand
and if the applicable registration statement in respect of such Demand has not
been withdrawn or abandoned, the Company shall not file or cause to be effected
any other registration of any of its equity securities or securities convertible
or exchangeable into or exercisable for its equity securities under the
Securities Act (other than a registration relating to the Company's employee
benefit plans, exchange offers by the Company, or a merger or acquisition of a
business or assets by the Company, including,

                                       9
<PAGE>

without limitation, a registration on Form S-4 or S-8 or any successor form),
whether on its own behalf or at the request of any holder or holders of such
securities, until a period of at least ninety (90) days has elapsed from the
effective date of any Demand Registration, unless a shorter period of time is
approved by JLL Building Products. Notwithstanding the foregoing, the Company
shall be entitled to postpone any such Demand Registration and may file or cause
to be effected such other registration in accordance with the terms of Section
4.01(e) hereof.

            SECTION 4.02 PIGGYBACK REGISTRATIONS.

                  (a) RIGHT TO PIGGYBACK. During the Registration Period,
whenever the Company proposes to register any shares of its Common Stock or
Common Stock held by any stockholders of the Company under the Securities Act
(other than a registration under Regulation A or relating to the Company's
employee benefit plans, exchange offers by the Company, or a merger or
acquisition of a business or assets by the Company, including, without
limitation, a registration on Form S-4 or Form S-8 or any successor form) (a
"Piggyback Registration"), the Company shall give each of the Stockholders
prompt written notice thereof (but not less than ten (10) business days prior to
the filing by the Company with the Commission of any registration statement with
respect thereto). Such notice (a "Piggyback Notice") shall specify the number of
securities proposed to be registered, the proposed date of filing of such
registration statement with the Commission, the proposed means of distribution,
the proposed managing underwriter or underwriters (if any and if known), and a
good faith estimate by the Company of the proposed minimum offering price of
such securities. Upon the written request of a Stockholder given to the
Secretary of the Company within ten (10) business days of the receipt by such
Stockholder of the Piggyback Notice requesting that the Company include in such
registration Registrable Securities owned by such Stockholder in an amount equal
to or greater than the Requisite Amount (which written request shall specify the
number of Registrable Securities intended to be disposed of by such Stockholder
and the intended method of distribution thereof), the Company shall include in
such registration all Registrable Securities with respect to which the Company
has received such written requests for inclusion, in accordance with the terms
hereof.

                  (b) PRIORITY ON PIGGYBACK REGISTRATIONS. If, in connection
with a Piggyback Registration, any managing underwriter (or, if such Piggyback
Registration is not an underwritten offering, a nationally recognized
independent underwriter selected by the Company) advises the Company and the
holders of the Registrable Securities to be included in such Piggyback
Registration, that, in its opinion, the inclusion of all the securities sought
to be included in such Piggyback Registration by the Company, by any Persons
other than the Stockholders who have sought to have shares registered thereunder
pursuant to rights to demand (other than pursuant to so-called "piggyback" or
other incidental or participation registration rights) such registration (such
demand rights, being "Other Demand Rights" and such other Persons, being "Other
Demanding Sellers"), by any holders of securities (including the Stockholders)
seeking to sell such securities in such Piggyback Registration ("Piggyback
Sellers"), in each case, if any would materially adversely affect the
marketability of the securities sought to be sold pursuant thereto, then the
Company shall include in the registration statement applicable to such Piggyback

                                       10
<PAGE>

Registration only such securities as the Company, the Other Demanding Sellers,
and the Piggyback Sellers are so advised by such underwriter can be sold without
such an effect (the "Maximum Piggyback Number"), as follows and in the following
order of priority:

                        (i) if the Piggyback Registration is an offering on
            behalf of the Company and not any Person exercising Other Demand
            Rights (whether or not other Persons seek to include securities
            therein pursuant to so-called "piggyback" or other incidental or
            participatory registration rights) (a "Primary Offering"), then (A)
            first, such number of securities to be sold by the Company as the
            Company, in its reasonable judgment and acting in good faith and in
            accordance with sound financial practice, shall have determined, (B)
            second, if the number of securities to be included under clause (A)
            above is less than the Maximum Piggyback Number, PRO RATA in
            proportion to the securities sought to be registered by all the
            Piggyback Sellers which in the aggregate, when added to the number
            of securities to be registered under clause (A) above, equals the
            Maximum Piggyback Number;

                        (ii) if the Piggyback Registration is an offering other
            than pursuant to a Primary Offering, then (A) first, such number of
            securities sought to be registered by each Other Demanding Seller,
            PRO RATA in proportion to the number of securities sought to be
            registered by all such Other Demanding Sellers, (B) second, if the
            number of securities to be included under clause (A) above is less
            than the Maximum Piggyback Number, the number of securities sought
            to be registered by each Piggyback Seller, PRO RATA in proportion to
            the securities sought to be registered by all the Piggyback Sellers,
            which in the aggregate, when added to the number of securities to be
            registered under clause (A) above, equals the Maximum Piggyback
            Number.

                  (c) WITHDRAWAL BY THE COMPANY. If, at any time after giving
written notice of its intention to register any of its securities as set forth
in this Section 4.02 and prior to the time the registration statement filed in
connection with such registration is declared effective, the Company shall
determine not to go forward with a Primary Offering, the Company may, at its
election, give written notice of such determination to each Stockholder and
thereupon shall be relieved of its obligation to register any Registrable
Securities in connection with such particular withdrawn or abandoned
registration (but not from its obligation to pay the Registration Expenses in
connection therewith as provided herein).

            SECTION 4.03 WITHDRAWAL RIGHTS. Any Stockholder having notified or
directed the Company to include any or all of its Registrable Securities in a
registration statement under the Securities Act shall have the right to withdraw
any such notice or direction with respect to any or all of the Registrable
Securities designated for registration thereby by giving written notice to such
effect to the Company prior to the effective date of such registration
statement. In the event of any such withdrawal, the Company shall not include
such Registrable Securities in the applicable registration and

                                       11

<PAGE>

such Registrable Securities shall continue to be Registrable Securities
hereunder. No such withdrawal shall affect the obligations of the Company with
respect to the Registrable Securities not so withdrawn; provided that in the
case of a Demand Registration, if such withdrawal shall reduce the number of
Registrable Securities sought to be included in such registration below $10
million of aggregate Fair Market Value as of such date, then the Company shall
as promptly as practicable give each holder of Registrable Securities sought to
be registered notice to such effect, referring to this Agreement and summarizing
this Section 4.03, and within five (5) business days of the effectiveness of
such notice either the Company or the holders of a majority of the Registrable
Securities sought to be registered may, by written notices made to each holder
of Registrable Securities sought to be registered and the Company, elect that
such registration statement not be filed or, if theretofore filed, be withdrawn.
During such period of five (5) business days, the Company shall not file such
registration statement if not theretofore filed, or, if such registration
statement has been theretofore filed, the Company shall not seek, and shall use
its best efforts to prevent, the effectiveness thereof. Any Demand Registration
withdrawn in accordance with an election by JLL Building Products subsequent to
the effectiveness of the applicable Demand Registration Statement shall be
counted as a Demand Registration unless JLL Building Products reimburses the
Company for its reasonable out-of-pocket expenses related to the preparation and
filing of such registration statement (in which event such registration
statement shall not be counted as a Demand Registration hereunder).

            SECTION 4.04 HOLDBACK AGREEMENTS. Each Stockholder agrees not to
effect any public sale or distribution (including sales pursuant to Rule 144) of
equity securities of the Company, or any securities convertible into or
exchangeable or exercisable for such securities, during the ten (10) day period
prior to the date on which the Company intends to commence a Public Offering
(provided the Stockholders are notified in writing of such commencement date)
through the ninety (90) day period immediately following the effective date of
any such Public Offering (except as part of such registration), or, if later,
the 90 day period immediately following the execution date of any underwriting
agreement with respect thereto.

            SECTION 4.05 REGISTRATION PROCEDURES.

                  (a) Whenever the Stockholders have requested that any
Registrable Securities be registered pursuant to this Agreement, the Company
(subject to its right to withdraw such registration as contemplated by Section
4.02(c)) shall use commercially reasonable efforts to effect the registration
and the sale of such Registrable Securities in accordance with the intended
method of disposition thereof and, in connection therewith, the Company shall:

                        (i) use commercially reasonable efforts to (A) register
            the Registrable Securities on Form S-3 or another available short
            form registration statement, to the extent permitted under the
            Securities Act, (B) cause the registration statement to remain
            effective for a continuous period of not less than 180 days (or, if
            earlier, until all of the Registrable Securities included in such
            registration statement have been sold

                                       12

<PAGE>

            thereunder), subject to Section 4.05(c), and (C) obtain the
            withdrawal of any order suspending the registration or qualification
            (or the effectiveness thereof) or suspending or preventing the use
            of any related prospectus in any jurisdiction with respect thereto;

                        (ii) promptly notify each seller of Registrable
            Securities of each of (A) the filing and effectiveness of the
            registration statement and prospectus and any amendment or
            supplements thereto, (B) the receipt of any comments from the
            Commission or any state securities law authorities or any other
            governmental authorities with respect to any such registration
            statement or prospectus or any amendments or supplements thereto,
            and (C) any oral or written stop order with respect to such
            registration, any suspension of the registration or qualification of
            the sale of such Registrable Securities in any jurisdiction, or any
            initiation or threatening of any proceedings with respect to any of
            the foregoing;

                        (iii) furnish to each seller of Registrable Securities,
            the underwriters, and the sales or placement agent, if any, and
            counsel for each of the foregoing, a conformed copy of such
            registration statement and each amendment and supplement thereto (in
            each case, including all exhibits thereto and documents incorporated
            by reference therein) and such additional number of copies of such
            registration statement, each amendment, and supplement thereto (in
            such case without such exhibits and documents), the prospectus
            (including each preliminary prospectus) included in such
            registration statement, and prospectus supplements and all exhibits
            thereto and documents incorporated by reference therein, and such
            other documents as such seller, underwriter, agent, or counsel may
            reasonably request in order to facilitate the disposition of the
            Registrable Securities owned by such seller;

                        (iv) use commercially reasonable efforts to register or
            qualify such Registrable Securities under such securities or "blue
            sky" laws of such jurisdictions as the holders of Registrable
            Securities reasonably request and do any and all other acts and
            things that may be reasonably necessary or advisable to enable the
            holders of Registrable Securities to consummate the disposition in
            such jurisdictions of the Registrable Securities owned by such
            holders and keep such registration or qualification in effect for so
            long as the registration statement remains effective under the
            Securities Act (provided that the Company shall not be required to
            (x) qualify generally to do business in any jurisdiction in which it
            would not otherwise be required to qualify but for this paragraph,
            (y) subject itself to taxation in any such jurisdiction in which it
            would not otherwise be subject to taxation but for this paragraph or
            (z) consent to the general service of process in any jurisdiction in
            which it would not otherwise be subject to general service of
            process but for this paragraph);

                                       13

<PAGE>

                        (v) notify each seller of such Registrable Securities,
            at any time when a prospectus relating thereto is required to be
            delivered under the Securities Act, upon the discovery that, or of
            the happening of any event as a result of which, the registration
            statement covering such Registrable Securities, as then in effect,
            contains an untrue statement of a material fact or omits to state
            any material fact required to be stated therein or any fact
            necessary to make the statements therein not misleading, and
            promptly prepare and furnish to each such seller a supplement or
            amendment to the prospectus contained in such registration statement
            so that such Registration Statement shall not, and such prospectus
            as thereafter delivered to the purchasers of such Registrable
            Securities shall not, contain an untrue statement of a material fact
            or omit to state any material fact required to be stated therein or
            any fact necessary to make the statements therein not misleading;

                        (vi) use commercially reasonable efforts to cause all
            such Registrable Securities to be listed on any securities exchange
            or established over-the-counter market on which or through which
            similar securities of the Company are listed or traded and, if not
            so listed or traded, to be listed on the NASD automated quotation
            system ("Nasdaq") and, if listed on Nasdaq, use commercially
            reasonable efforts to secure designation of all such Registrable
            Securities covered by such registration statement as a Nasdaq
            "national market system security" within the meaning of Rule 11Aa2-1
            under the Exchange Act; or, failing that, to secure Nasdaq
            authorization for such Registrable Securities;

                        (vii) make available for inspection by any seller of
            Registrable Securities and any attorney, accountant, or other agent
            retained by any such seller or underwriter all financial and other
            records, pertinent corporate documents, and properties of the
            Company, and cause the Company's officers, directors, employees,
            attorneys, and independent accountants to supply all information
            reasonably requested by any such sellers, attorneys, accountants, or
            agents in connection with such registration statement. Information
            that the Company determines, in good faith, to be confidential shall
            not be disclosed by such persons unless (x) the disclosure of such
            information is necessary to avoid or correct a misstatement or
            omission in such registration statement, or (y) the release of such
            information is ordered pursuant to a subpoena or other order from a
            court of competent jurisdiction. Each seller of Registrable
            Securities agrees, on its own behalf and on behalf of all its
            accountants, attorneys. and agents, that the information obtained by
            it as a result of such inspections shall be deemed confidential and
            shall not be used by it as the basis for any market transactions in
            the securities of the Company unless and until such is made
            generally available to the public. Each seller of Registrable
            Securities further agrees, on its own behalf and on behalf of all
            its accountants, attorneys, and agents, that it will, upon learning
            that disclosure of such information is sought in a court of
            competent

                                       14

<PAGE>

            jurisdiction, give notice to the Company and allow the Company, at
            the Company's expense, to undertake appropriate action to prevent
            disclosure of the information deemed confidential;

                        (viii) use commercially reasonable efforts to comply
            with all applicable laws related to such registration statement and
            offering and sale of securities and all applicable rules and
            regulations of governmental authorities in connection therewith
            (including, without limitation, the Securities Act and the Exchange
            Act) and make generally available to its security holders as soon as
            practicable (but in any event not later than fifteen (15) months
            after the effectiveness of such registration statement) an earnings
            statement of the Company and its subsidiaries complying with Section
            11(a) of the Securities Act;

                        (ix) permit any Stockholder, which Stockholder, in its
            sole and exclusive judgment, might be deemed to be an underwriter or
            controlling person of the Company, to participate in the preparation
            of such registration statement and to require the insertion therein
            of material, furnished to the Company in writing, that in the
            reasonable judgment of such holder and such holder's counsel should
            be included; and

                        (x) use commercially reasonable efforts to furnish to
            each seller of Registrable Securities a signed counterpart of (x) an
            opinion of counsel for the Company and (y) a "comfort" letter signed
            by the independent public accountants who have certified the
            Company's financial statements included or incorporated by reference
            in such registration statement, covering such matters with respect
            to such registration statement and, in the case of the accountants'
            comfort letter, with respect to events subsequent to the date of
            such financial statements, as are customarily covered in opinions of
            issuer's counsel and in accountants' comfort letters delivered to
            the underwriters in underwritten public offerings of securities for
            the account of, or on behalf of, an issuer of common stock, such
            opinion and comfort letters to be dated the date of such opinions
            and comfort letters are customarily dated in such transactions, and
            covering in the case of such legal opinion, such other legal matters
            and, in the case of such comfort letter, such other financial
            matters, as the holders of a majority of the Registrable Securities
            being sold may reasonably request.

                  (b) UNDERWRITING. Without limiting any of the foregoing, in
the event that the offering of Registrable Securities is to be made by or
through an underwriter, the Company shall enter into an underwriting agreement
with a managing underwriter or underwriters containing representations,
warranties, indemnities, and agreements customarily included (but not
inconsistent with the agreements contained herein) by an issuer of common stock
in underwriting agreements with respect to offerings of common stock for the
account of, or on behalf of, such issuers. In connection with the sale of
Registrable Securities hereunder, any seller of such

                                       15

<PAGE>

Registrable Securities may, at its option, require that any and all
representations and warranties by, and indemnities and agreements of, the
Company to or for the benefit of such underwriter or underwriters (or which
would be made to or for the benefit of such an underwriter or underwriter if
such sale of Registrable Securities were pursuant to a customary underwritten
offering) be made to and for the benefit of such seller and that any or all of
the conditions precedent to the obligations of such underwriter or underwriters
(or which would be so for the benefit of such underwriter or underwriters under
a customary underwriting agreement) be conditions precedent to the obligations
of such seller in connection with the disposition of its securities pursuant to
the terms hereof. In connection with any offering of Registrable Securities
registered pursuant to this Agreement, the Company shall (x) furnish to the
underwriter, if any (or, if no underwriter, the sellers of such Registrable
Securities), unlegended certificates representing ownership of the Registrable
Securities being sold, in such denominations as requested and (y) instruct any
transfer agent and registrar of the Registrable Securities to release any stop
transfer order with respect thereto.

                  (c) RETURN OF PROSPECTUSES. Each seller of Registrable
Securities hereunder agrees that upon receipt of any notice from the Company of
the happening of any event of the kind described in Section 4.05(a)(v), such
seller shall forthwith discontinue such seller's disposition of Registrable
Securities pursuant to the applicable registration statement and prospectus
relating thereto until such seller's receipt of the copies of the supplemented
or amended prospectus contemplated by Section 4.05(a)(v) and, if so directed by
the Company, deliver to the Company all copies, other than permanent file
copies, then in such seller's possession of the prospectus current at the time
of receipt of such notice relating to such Registrable Securities. In the event
the Company shall give such notice, the one hundred and eighty (180) day period
during which such registration statement must remain effective pursuant to
Section 4.05(a)(i) of this Agreement (or such shorter period as permitted by
Section 4.05(a)(i)) shall be extended by the number of days during the period
from the date of giving of a notice regarding the happening of an event of the
kind described in Section 4.05(a)(v) to the date when all such sellers shall
receive such a supplemented or amended prospectus and such prospectus shall have
been filed with the Commission.

            SECTION 4.06 REGISTRATION EXPENSES. All expenses incident to the
Company's performance of, or compliance with, its obligations under this
Agreement including, without limitation, all registration and filing fees, all
fees and expenses of compliance with securities and "blue sky" laws (including,
without limitation, the fees and expenses of counsel for underwriters or
placement or sales agents in connection therewith), all printing and copying
expenses, all messenger and delivery expenses, all fees and expenses of
underwriters and sales and placement agents in connection therewith (excluding
discounts and commissions of such underwriters or placement agents), all fees
and expenses of the Company's independent certified public accountants and
counsel (including, without limitation, with respect to "comfort" letters and
opinions) (collectively, the "Registration Expenses") shall be borne by the
Company; notwithstanding the foregoing, all underwriting discounts and
commissions allocable to each Stockholder selling Registrable Securities shall
be borne by such Stockholder. The Company shall not be responsible for the fees
and expenses of any additional counsel, or

                                       16

<PAGE>

any of the accountants, agents, or experts retained by the Stockholders in
connection with the sale of Registrable Securities. The Company will pay its
internal expenses (including, without limitation, all salaries and expenses of
its officers and employees performing legal or accounting duties, the expense of
any annual audit, and the expense of any liability insurance) and the expenses
and fees for listing the securities to be registered on each securities exchange
and included in each established over-the-counter market on which similar
securities issued by the Company are then listed or traded or for listing on
Nasdaq.

            SECTION 4.07 INDEMNIFICATION.

                  (a) BY THE COMPANY. The Company agrees to indemnify, to the
fullest extent permitted by law, each holder of Registrable Securities being
sold, its directors, and each Person who controls (within the meaning of the
Securities Act) such holder against all losses, claims, damages, liabilities,
and expenses (including legal fees and expenses and all costs incident to
investigation or preparation with respect to such losses, claims, damages,
liabilities, and expenses and to reimburse such indemnified Person for such
costs as incurred) (collectively, the "Losses") caused by, resulting from, or
relating to any untrue or alleged untrue statement of material fact contained in
any registration statement, prospectus, or preliminary prospectus or any
amendment thereof or supplement thereto or any omission or alleged omission of a
material fact required to be stated therein or a fact necessary to make the
statements therein not misleading, except insofar as the same are caused by or
contained in any information furnished to the Company by or on behalf of such
holder in writing expressly for use therein or by such holder's failure to
deliver a copy of the registration statement or prospectus or any amendments or
supplements thereto after the Company has furnished such holder with a
sufficient number of copies of the same and notified such holder of such
obligation. In connection with an underwritten offering and without limiting any
of the Company's other obligations under this Agreement, the Company shall
indemnify such underwriters, their officers, directors, employees, and agents
and each Person who controls (within the meaning of the Securities Act) such
underwriters or such an other indemnified Person to the same extent as provided
above with respect to the indemnification of the holders of Registrable
Securities being sold.

                  (b) BY THE STOCKHOLDERS. In connection with any registration
statement in which a holder of Registrable Securities is participating, each
such holder will, if requested, furnish to the Company in writing information
regarding such holder's ownership of Registrable Securities and, to the extent
permitted by law, shall indemnify the Company, its directors, and each Person
who controls (within the meaning of the Securities Act) the Company against all
Losses caused by, resulting from, or relating to any untrue or alleged untrue
statement of material fact contained in the registration statement, prospectus,
or preliminary prospectus or any amendment thereof or supplement thereto or any
omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein not misleading, but only to the extent
that such untrue statement or omission is caused by and contained in such
information so furnished to the Company in writing by or on behalf of such
holder; provided, however, that each holder's obligation to indemnify the
Company hereunder

                                       17

<PAGE>

shall be apportioned between each holder based upon the net amount received by
each holder from the sale of Registrable Securities, as compared to the total
net amount received by all of the holders of Registrable Securities sold
pursuant to such registration statement, no such holder being liable to the
Company in excess of such apportionment.

                  (c) NOTICE. Any Person entitled to indemnification hereunder
shall give prompt written notice to the indemnifying party of any claim with
respect to which its seeks indemnification; provided, however, the failure to
give such notice shall not release the indemnifying party from its obligation,
except to the extent that the indemnifying party has been materially prejudiced
by such failure to provide such notice.

                  (d) DEFENSE OF ACTIONS. In any case in which any such action
is brought against any indemnified party, and it notifies an indemnifying party
of the commencement thereof, the indemnifying party will be entitled to
participate therein, and, to the extent that it may wish, jointly with any other
indemnifying party similarly notified, to assume the defense thereof, with
counsel reasonably satisfactory to such indemnified party, and after notice from
the indemnifying party to such indemnified party of its election so to assume
the defense thereof the indemnifying party will not (so long as it shall
continue to have the right to defend, contest, litigate, and settle the matter
in question in accordance with this paragraph) be liable to such indemnified
party hereunder for any legal or other expense subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation, supervision and monitoring (unless such indemnified
party reasonably objects to such assumption on the grounds that there may be
defenses available to it that are different from or in addition to the defenses
available to such indemnifying party, in which event the indemnified party shall
be reimbursed by the indemnifying party for the expenses incurred in connection
with retaining separate legal counsel). An indemnifying party shall not be
liable for any settlement of an action or claim effected without its consent.
The indemnifying party shall lose its right to defend, contest, litigate, and
settle a matter if it shall fail diligently to contest such matter (except to
the extent settled in accordance with the next following sentence). No matter
shall be settled by an indemnifying party without the consent of the indemnified
party (which consent shall not be unreasonably withheld).

                  (e) SURVIVAL. The indemnification provided for under this
Agreement shall remain in full force and effect regardless of any investigation
made by or on behalf of the indemnified Person and will survive the transfer of
the Registrable Securities and the termination of this Agreement.

                  (f) CONTRIBUTION. If recovery is not available under the
foregoing indemnification provisions for any reason or reasons other than as
specified therein, any Person who would otherwise be entitled to indemnification
by the terms thereof shall nevertheless be entitled to contribution with respect
to any Losses with respect to which such Person would be entitled to such
indemnification but for such reason or reasons. In determining the amount of
contribution to which the respective Persons are entitled, there shall be
considered the Persons' relative knowledge and access to information concerning
the matter with respect to which the claim was asserted, the

                                       18

<PAGE>

opportunity to correct and prevent any statement or omission, and other
equitable considerations appropriate under the circumstances. It is hereby
agreed that it would not necessarily be equitable if the amount of such
contribution were determined by PRO RATA or per capita allocation. No person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the Securities Act) shall be entitled to contribution from any person who was
not found guilty of such fraudulent misrepresentation. Notwithstanding the
foregoing, no Stockholder shall be required to make a contribution in excess of
the net amount received by such holder from the sale of Registrable Securities.

                                   ARTICLE V

                                  MISCELLANEOUS

            SECTION 5.01 INCONSISTENT AGREEMENTS. Without the prior written
consent of JLL Building Products, the Company shall not enter into any
registration rights agreement that conflicts, or is inconsistent, with the
provisions of Article IV hereof.

            SECTION 5.02 SPECIFIC PERFORMANCE. Each of the Stockholders
acknowledges and agrees that, in the event of any breach of this Agreement, the
non-breaching party or parties would be irreparably harmed and could not be made
whole by monetary damages. The Stockholders hereby agree that, in addition to
any other remedy to which any party may be entitled at law or in equity, they
shall be entitled to compel specific performance of this Agreement in any action
instituted in any court of the United States or any state thereof having subject
matter jurisdiction for such action.

            SECTION 5.03 HEADINGS. The headings in this Agreement are for
convenience of reference only and shall not control or affect the meaning or
construction of any provisions hereof.

            SECTION 5.04 ENTIRE AGREEMENT. This Agreement constitutes the entire
agreement and understanding of the parties hereto in respect of the subject
matter contained herein, and there are no restrictions, promises,
representations, warranties, covenants, conditions, or undertakings with respect
to the subject matter hereof, other than those expressly set forth or referred
to herein. This Agreement supersedes all prior agreements and understandings
between the parties hereto with respect to the subject matter hereof.

            SECTION 5.05 NOTICES. All notices and other communications hereunder
shall be in writing and shall be delivered personally or by next-day courier or
telecopied with confirmation of receipt to the parties at the addresses
specified below (or at such other address for a party as shall be specified by
like notice; provided that notices of change of address shall be effective only
upon receipt thereof). Any such notice shall be effective upon receipt, if
personally delivered or telecopied, or one day after delivery to a courier for
next-day delivery.

            If to the Company, to:

                                       19

<PAGE>

                                    Builders FirstSource, Inc.
                                    2001 Bryan Street, Suite 1600
                                    Dallas, TX  75201
                                    Attention:  Donald F. McAleenan, Esq.
                                    Fax:  (214) 880-3599

                                    with a copy to:

                                    Skadden, Arps, Slate, Meagher & Flom LLP
                                    One Rodney Square
                                    Wilmington, DE  19801
                                    Attention:  Robert B. Pincus, Esq.
                                    Fax:  (302) 651-3001

            If to JLL Building Products, to:

                                    JLL Partners, Inc.
                                    450 Lexington Avenue
                                    Suite 3350
                                    New York, NY 10017
                                    Attention:  Ramsey Frank
                                    Fax: (212)286-8626

                                    with a copy to:

                                    Skadden, Arps, Slate, Meagher & Flom LLP
                                    One Rodney Square
                                    Wilmington, DE  19801
                                    Attention:  Robert B. Pincus, Esq.
                                    Fax:  (302) 651-3001

            If to any Stockholder, to:

                                    Builders FirstSource, Inc.
                                    2001 Bryan Street, Suite 1600
                                    Dallas, TX  75201
                                    Attention:  [Stockholder]
                                    Fax:  (214) 880-3599

            SECTION 5.06 APPLICABLE LAW. The substantive laws of the State of
Delaware shall govern the interpretation, validity, and performance of the terms
of this Agreement, regardless of the law that might be applied under applicable
principles of conflicts of laws.

            SECTION 5.07 SEVERABILITY. The invalidity, illegality, or
unenforceability of one or more of the provisions of this Agreement in any
jurisdiction

                                       20

<PAGE>

shall not affect the validity, legality, or enforceability of the remainder of
this Agreement in such jurisdiction or the validity, legality, or enforceability
of this Agreement, including any such provision, in any other jurisdiction, it
being intended that all rights and obligations of the parties hereunder shall be
enforceable to the fullest extent permitted by law.

            SECTION 5.08 SUCCESSORS; ASSIGNS. The provisions of this Agreement
shall be binding upon the parties hereto and their respective heirs, successors,
and permitted assigns. Neither this Agreement nor the rights or obligations of
any Stockholder hereunder may be assigned, except in connection with the
transfer by a Stockholder of shares of Common Stock to a Permitted Transferee or
as otherwise provided in this Agreement. Any such attempted assignment in
contravention of this Agreement shall be void and of no effect.

            SECTION 5.09 AMENDMENTS. This Agreement may not be amended,
modified, or supplemented unless such modification is in writing and signed by
(a) the Company, (b) JLL Building Products and (c) Other Stockholders owning at
least 66?% of the outstanding shares of Common Stock held by the Other
Stockholders subject to this Agreement as of the date of such amendment.

            SECTION 5.10 WAIVER. Any waiver (express or implied) of any default
or breach of this Agreement shall not constitute a waiver of any other or
subsequent default or breach.

            SECTION 5.11 COUNTERPARTS. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original but all of which
shall constitute one and the same Agreement.

            SECTION 5.12 TERM. This Agreement shall be subject to, and shall be
effective as of, the consummation of the Initial Public Offering. As of the time
that this Agreement becomes effective, the Amended Agreement shall immediately
terminate and all rights and obligations thereunder shall be of no further force
and effect. In the event that the Initial Public Offering is not consummated by
September 30, 2005, this Agreement shall not become effective, and the Amended
Agreement shall continue in full force and effect. Unless earlier terminated,
this Agreement shall terminate upon the seventh anniversary of the consummation
of the Initial Public Offering; provided, however, that to the extent that any
Demand Registration or Piggyback Registration has commenced at such time, this
Agreement shall remain in effect until the termination or expiration of such
Demand Registration or Piggyback Registration, as the case may be, and the
Stockholders' obligations pursuant to Section 4.04 hereof shall continue until
90 days following the effectiveness of the Registration Statement related
thereto. Notwithstanding the foregoing, at any time following the Registration
Period Commencement Date, any Stockholder may provide written notice to the
Company of its irrevocable election to withdraw from all of its rights and
obligations under this Agreement. In such event, from and after the date of such
notice, such Stockholder shall no longer be bound by any obligations, or be
entitled to any benefits, under this Agreement (other than those that have
accrued prior to such date) and from and after such

                                       21

<PAGE>

time, securities held by such Stockholder shall no longer be deemed to be
Registrable Securities hereunder.

                            [SIGNATURE PAGE FOLLOWS]

                                       22

<PAGE>

            IN WITNESS WHEREOF, the undersigned hereby agree to be bound by the
terms and provisions of this Second Amended and Restated Stockholders Agreement
as of the date first above written.

                                    BUILDERS FIRSTSOURCE, INC.

                                    By:_________________________________________
                                          Name:
                                          Title:

                                    JLL BUILDING PRODUCTS, LLC

                                    By:_________________________________________
                                          Name:
                                          Title:

                                       -----------------------------------------
                                       Floyd F. Sherman

                                       -----------------------------------------
                                       Charles L. Horn

                                       -----------------------------------------
                                       Kevin P. O'Meara

                                       -----------------------------------------
                                       Donald F. McAleenan

                                       23

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