Document:

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                                                                     Exhibit 4.2

      COMMON STOCK                                              COMMON STOCK

INCORPORATED UNDER THE LAWS
 OF THE STATE OF DELAWARE                                          SHARES

                           [BUILDERS FIRSTSOURCE LOGO]         SEE REVERSE FOR
                                                             CERTAIN DEFINITIONS

                                                               CUSIP 12008R 10 7

THIS CERTIFIES THAT

IS THE OWNER OF

           FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK,
                         PAR VALUE $0.01 PER SHARE, OF

                              CERTIFICATE OF STOCK

Builders FirstSource, Inc. transferable on the books of the Corporation by the
holder hereof in person or by duly authorized Attorney, upon surrender of this
Certificate properly endorsed.

This Certificate is not valid until countersigned and registered by the
Transfer Agent and Registrar.

Witness the facsimile seal of the Corporation and the facsimile signatures of
its duly authorized officers.

Dated:

/s/ Donald F. McAleenan     [BUILDERS FIRSTSOURCE, INC.]   /s/ Floyd F. Sherman
              SECRETARY        [CORPORATE SEAL 1998]           PRESIDENT AND CEO
                                     [DELAWARE]

COUNTERSIGNED AND REGISTERED:
                       LASALLE BANK NATIONAL ASSOCIATION
                                                                  TRANSFER AGENT
BY                                                                 AND REGISTRAR

                                                            AUTHORIZED SIGNATURE

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The following abbreviations, when used in the inscription on the face of this
certificate, shall be construed as though they were written out in full
according to applicable laws or regulations.

<Table>
<S>                                <C>
TEN COM -- as tenants in common                   UNIF GIFT MIN ACT -- ____________ Custodian ___________
TEN ENT -- as tenants by the entireties                                  (Cust)                (Minor)
JT TEN  -- as joint tenants with right of                              under Uniform Gifts to Minors
           survivorship and not as tenants                             Act ______________________________
           in common                                                               (State)
                                                  UNIF TRF MIN ACT  -- _________ Custodian (until age ____)
                                                                         (Cust)
                                                                       ___________ under Uniform Transfers
                                                                        (Minor)
                                                                       to Minors Act ______________________
                                                                                          (State)
</Table>

    Additional abbreviations may also be used though not in the above list.

FOR VALUE RECEIVED, __________________ hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
  IDENTIFYING NUMBER OF ASSIGNEE
 ________________________________________
|                                        |
|________________________________________|

________________________________________________________________________________
  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________

________________________________________________________________________________

_________________________________________________________________________ Shares
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

_______________________________________________________________________ Attorney
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated __________________

                         X _____________________________________________________

                         X _____________________________________________________
                           THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND
                   NOTICE: WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE
                           CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION
                           OR ENLARGEMENT OR ANY CHANGE WHATEVER.

Signature(s) Guaranteed

By ___________________________________________________
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND
LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
PURSUANT TO S.E.C. RULE 17Ad-15.<PAGE>

                                                                    EXHIBIT 10.7
                                                                    ------------

                           BUILDERS FIRSTSOURCE, INC.
                        FORM OF MANAGEMENT INCENTIVE PLAN

     1. Purposes; Interpretation. The purposes of the Builders FirstSource, Inc.
Management Incentive Plan are to reinforce corporate, organizational and
business-development goals, to promote the achievement of year-to-year financial
and other business objectives and to reward the performance of the Company's
executive officers in fulfilling their personal responsibilities. The Plan is
designed and intended to comply, to the extent applicable, with Section 162(m)
of the Code, and all provisions hereof shall be construed in a manner to so
comply.

     2. Definitions. The following terms, as used herein, shall have the
following meanings:

        (a) "Affiliate" shall mean, with respect to the Company or any of its
subsidiaries, any other Person directly or indirectly controlling or controlled
by or under direct or indirect common control with the Company.

        (b) "Award" shall mean an incentive compensation award, granted pursuant
to the Plan, that is contingent upon the attainment of Performance Goals with
respect to a Performance Period.

        (c) "Board" shall mean the Board of Directors of the Company.

        (d) "Code" shall mean the Internal Revenue Code of 1986, as amended.

        (e) "Committee" shall mean the committee that may be established by the
Board to administer the Plan, the composition of which shall at all times
consist of "outside directors" within the meaning of section 162(m) of the Code.

        (f) "Company" shall mean Builders FirstSource, Inc. and its subsidiaries
and successors.

        (g) "Covered Employee" shall have the meaning set forth in Section
162(m)(3) of the Code.

        (h) "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

        (i) "Participant" shall mean an executive officer of the Company who is,
pursuant to Section 4 of the Plan, selected to participate herein.

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        (j) "Performance Goals" shall mean performance goals based on one or
more of the following criteria, determined in accordance with generally accepted
accounting principles, where applicable: (i) pre-tax income or after-tax income;
(ii) earnings including operating income, earnings before or after taxes,
earnings before or after interest, depreciation, amortization, or extraordinary
or special items; (iii) net income excluding amortization of intangible assets,
depreciation and impairment of goodwill and intangible assets; (iv) operating
income; (v) earnings or book value per share (basic or diluted); (vi) return on
assets (gross or net), return on investment, return on capital, or return on
equity; (vii) return on revenues; (viii) net tangible assets (working capital
plus property, plants and equipment) or return on net tangible assets (operating
income divided by average net tangible assets); (ix) operating cash flow
(operating income plus or minus changes in working capital less capital
expenditures); (x) cash flow, free cash flow, cash flow return on investment
(discounted or otherwise), net cash provided by operations, or cash flow in
excess of cost of capital; (xi) economic value created; (xii) operating margin
or profit margin; (xiii) stock price or total stockholder return; (xiv) earnings
from continuing operations; (xv) cost targets, reductions or savings,
productivity or efficiencies; (xvi) strategic business criteria, consisting of
one or more objectives based on meeting specified market penetration or market
share, geographic business expansion, customer satisfaction, employee
satisfaction, human resources management, supervision of litigation, information
technology, or goals relating to divestitures, joint ventures or similar
transactions; or (xvii) any other criteria determined by the Board to be
appropriate. Where applicable, the Performance Goals may be expressed in terms
of attaining a specified level of the particular criterion or the attainment of
a percentage increase or decrease in the particular criterion, and may be
applied to one or more of the Company or a parent or subsidiary of the Company,
or a division or strategic business unit of the Company, all as determined by
the Board. The Performance Goals may include a threshold level of performance
below which no payment will be made (or no vesting will occur), levels of
performance at which specified payments will be paid (or specified vesting will
occur) and a maximum level of performance above which no additional payment will
be made (or at which full vesting will occur). Each of the foregoing Performance
Goals shall be evaluated in accordance with generally accepted accounting
principles, where applicable, and shall be subject to certification by the
Board. The Board shall have the authority to make equitable adjustments to the
Performance Goals in recognition of unusual or non-recurring events affecting
the Company or any parent or subsidiary of the Company or the financial
statements of the Company or any parent or subsidiary of the Company, in
response to changes in applicable laws or regulations or to account for items of
gain, loss or expense determined to be extraordinary or unusual in nature or
infrequent in occurrence or related to the disposal of a segment of a business
or related to a change in accounting principles.

        (k) "Performance Period" shall mean, unless the Board determines
otherwise, a period of no longer than 12 months.

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        (l) "Person" shall mean any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization,
limited liability company or government or other entity.

        (m) "Plan" shall mean the Builders FirstSource, Inc. Management
Incentive Plan, as amended from time to time.

     3. Administration. The Plan shall be administered by the Board. The Board
may appoint a Committee to administer all or a portion of the Plan and to make
recommendations to the Board with respect to the Plan and any Awards; provided,
that such Committee's authorities and responsibilities shall always be limited
by the Board's sole authority to make all final determinations under the Plan.
The Board may delegate to one or more agents such administrative duties as it
may deem advisable, and the Committee or any other person to whom the Board has
delegated duties as aforesaid may employ one or more persons to render advice
with respect to any responsibility the Board or such Committee or person may
have under the Plan.

     The Board shall have the authority in its sole discretion, subject to and
not inconsistent with the express provisions of the Plan, to administer the Plan
and to exercise all the powers and authorities either specifically granted to it
under the Plan or necessary or advisable in the administration of the Plan,
including, without limitation, the authority to: (i) grant Awards; (ii)
determine the persons to whom and the time or times at which Awards shall be
granted; (iii) determine all of the terms and conditions (including but not
limited to the Performance Goals) relating to any Award; (iv) determine whether,
to what extent, and under what circumstances an Award may be settled, cancelled
or forfeited; (v) make adjustments in the Performance Goals as provided in
Section 1(j) hereof; (vi) construe and interpret the Plan and any Award; (vii)
prescribe, amend and rescind rules and regulations relating to the Plan; and
(viii) make all other determinations deemed necessary or advisable for the
administration of the Plan. All decisions, determinations and interpretations of
the Board shall be final and binding on all persons, including the Company, the
Participant (or any person claiming any rights under the Plan from or through
any Participant) and any Company stockholder. No member of the Board or the
Committee shall be liable for any action taken or determination made in good
faith with respect to the Plan or any Award granted hereunder.

     4. Eligibility. Awards may be granted to executive officers of the Company
in the Board's sole discretion. Subject to Section 5(a) below, in determining
the persons to whom Awards shall be granted and the Performance Goals relating
to each Award, the Board shall take into account such factors as the Board shall
deem relevant in connection with accomplishing the purposes of the Plan.

     5. Terms of Awards.
        ---------------

        (a) In General. The Board shall specify with respect to a Performance
Period the Performance Goals applicable to each Award and, if applicable,
minimum, target

<PAGE>

and maximum levels applicable to each Performance Goal. Awards for any
Performance Period may be expressed as a dollar amount or as a percentage of the
Participant's annual base salary. Unless otherwise determined by the Board,
payment in respect of Awards shall be made only if and to the extent the
Performance Goals with respect to such Performance Period are attained.

        (b) Special Provisions Regarding Awards. Notwithstanding anything to the
contrary contained in this Section 5, in no event shall payment in respect of an
Award granted for a Performance Period be made to a Participant who is or is
reasonably expected to be a Covered Employee in an amount that exceeds $5
million. The Board may, in its sole discretion, increase (subject to the maximum
amount set forth in this Section 5(b)) or decrease the amounts otherwise payable
to Participants upon the achievement of Performance Goals under an Award;
provided, however, that in no event may the Board so increase the amount
otherwise payable to a Covered Employee pursuant to an Award.

        (c) Time and Form of Payment. All payments in respect of Awards granted
under this Plan shall be made, in the Board's discretion, in cash (either within
a reasonable period after the end of the Performance Period or on a deferred
basis under rules promulgated by the Board) and/or in the form of equity-based
awards under an equity compensation plan that has been approved by the Company's
stockholders; provided, however, that, unless otherwise determined by the Board,
in order to receive payment in respect of an Award, a Participant must be
employed by the Company or one of its Affiliates on the day payment would be
made in the absence of any deferral. In addition, such payments shall be made
only after achievement of the Performance Goals has been certified by the Board.

     6. General Provisions.
        ------------------

        (a) Compliance With Legal Requirements. The Plan and the granting and
payment of Awards, and the other obligations of the Company under the Plan and
any Award, shall be subject to all applicable Federal and state laws, rules and
regulations and to required approvals by any regulatory or governmental agency.

        (b) Nontransferability. Awards shall not be transferable by a
Participant except by will or the laws of descent and distribution.

        (c) Participant Rights. No executive officer of the Company or any other
person shall have any claim to be granted any Award under the Plan. There is no
obligation for uniformity of treatment among Participants. Nothing in the Plan
or in any Award granted pursuant hereto shall confer upon any Participant the
right to continue in the employ of the Company or to be entitled to any
remuneration or benefits not set forth in the Plan or under such Award or to
interfere with or limit in any way the right of the Company to terminate such
Participant's employment.

<PAGE>

        (d) Beneficiary. A Participant may file with the Board a written
designation of a beneficiary on such form as may be prescribed by the Board and
may, from time to time, amend or revoke such designation. If no designated
beneficiary survives the Participant, the executor or administrator of the
Participant's estate shall be deemed to be the grantee's beneficiary.

        (e) Withholding Taxes. The Company shall have the right to withhold the
amount of any taxes that the Company may be required to withhold before delivery
of payment of an Award to the Participant or other person entitled to such
payment, or to make such other arrangements for the withholding of taxes that
the Company deems satisfactory.

        (f) Amendment and Termination of the Plan. The Board or the Board may at
any time and from time to time alter, amend, suspend or terminate the Plan in
whole or in part; provided, however, that no amendment that requires stockholder
approval in order for the Plan to comply with any applicable law, regulation or
rule (including, if applicable, Section 162(m) of the Code) shall be effective
unless the same shall be approved by the requisite vote of the Company's
stockholders. Notwithstanding the foregoing, no amendment or termination of the
Plan shall affect adversely any of the rights of any Participant, without such
Participant's consent, under any Award theretofore granted under the Plan.

        (g) Unfunded Status of Awards. The Plan is intended to constitute an
"unfunded" plan for incentive and deferred compensation. With respect to any
payments not yet made to a Participant pursuant to an Award, nothing contained
in the Plan or any Award shall give any such Participant any rights that are
greater than those of a general creditor of the Company.

        (h) Governing Law. The Plan and all determinations made and actions
taken pursuant hereto shall be governed by the laws of the State of Delaware
without giving effect to the conflict of laws principles thereof.

        (i) Effective Date. The Plan shall take effect as of [ ], 2005, subject
to the approval of the Company's stockholders.

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