Exhibit 10.3



 Exhibit 10.3 
 TREX COMPANY, INC. 
 CHANGE IN CONTROL SEVERANCE AGREEMENT 
 THIS AGREEMENT (the “Agreement”) is entered into as of April 2, 2007 (the “Effective Date”) by and between TREX
COMPANY, INC., a Delaware corporation (the “Company”), and ANTHONY J. CAVANNA, a key employee of the Company (the “Eligible Employee”). 
 RECITALS: 
 WHEREAS, the Eligible Employee has been important in developing and
expanding the business and operations of the Company and possesses valuable knowledge and skills with respect to such business; 
 WHEREAS,
the Compensation Committee of the Board of Directors of the Company (the “Committee”) believes that it is in the best interests of the Company to encourage the Eligible Employee’s continued employment with and dedication to the
Company and has authorized the Company to enter into this Agreement; 
 WHEREAS, the parties desire to enter into this Agreement setting
forth the terms and conditions for the payment of compensation to the Eligible Employee in the event of a termination of the Eligible Employee’s employment in connection with a Change in Control (as defined herein) during the term of this
Agreement; 
 NOW, THEREFORE, in consideration of the foregoing, the agreements and covenants set forth herein, and other valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereby agree as follows: 
 1. Definitions. Except as otherwise
provided in this Agreement, capitalized terms in this Agreement shall have the meanings set forth in this Section 1. 
  

	 	(a)	“Administrator” means the Committee or such other person or persons appointed from time to time by the Committee. 

  

	 	(b)	“Affiliate” means any “parent corporation” and any “subsidiary corporation” of the Company, as such terms are defined in Section 424 of the
Code. 

  

	 	(c)	“Board” means the Board of Directors of the Company. 

  

	 	(d)	“Cause” means one of the following reasons for which the Eligible Employee’s employment with the Employer is terminated: (1) willful or grossly negligent
misconduct that is materially injurious to the Employer; (2) embezzlement or misappropriation of funds or property of the Employer; (3) conviction of a felony or the entrance of a plea of guilty or nolo contendere to a felony;
(4) conviction of any crime involving fraud, dishonesty, moral turpitude or breach of trust or the entrance of a plea of guilty or nolo contendere to such a crime; or (5) failure or refusal by the Eligible Employee to devote full business
time and attention to the performance of his duties and responsibilities if such breach has not been cured within 15 days after notice thereof is given to the Eligible Employee. 









	 	(e)	“Change in Control” means the first of the following events to occur after the Effective Date: 

 (1) The consummation of a transaction in which any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities
Exchange Act of 1934, as amended) becomes, within the 12-month period ending on the date of such person’s most recent acquisition, a “beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of
securities representing more than 35% of the voting power of the then outstanding securities of the Company; provided that a Change of Control shall not be deemed to occur as a result of a transaction in which the Company becomes a subsidiary of
another corporation and in which the stockholders of the Company, immediately prior to the transaction, will beneficially own, immediately after the transaction, shares entitling such stockholders to more than 50% of all votes to which all
stockholders of the other corporation would be entitled in the election of directors (without consideration of the rights of any class of stock to elect directors by a separate class vote); 
 (2) The consummation of (a) a merger, consolidation, or similar extraordinary event involving the Company and another entity where
the stockholders of the Company, immediately prior to the merger, consolidation or similar extraordinary event, will not beneficially own, immediately after the merger, consolidation or similar extraordinary event, securities entitling such
stockholders to more than 50% of all votes to which all stockholders of the surviving corporation would be entitled in the election of directors (without consideration of the rights of any class of stock to elect directors by a separate class vote),
or (b) a sale or other disposition of all or substantially all of the assets of the Company; or 
 (3) During any
24-month period, individuals who at the beginning of any such period constitute the Board cease for any reason to constitute at least a majority thereof, unless the election, or the nomination for election by the Company’s stockholders, of each
director of the Company first elected during such period was approved by a vote of at least two-thirds of the directors of the Company then still in office who were directors of the Company at the beginning of such 24-month period. 
  

	 	(f)	“Change in Control Severance Benefits” means the benefits payable pursuant to Section 3 of this Agreement. 

  

	 	(g)	“Change in Control Protection Period” means the period commencing on the later of (1) the date that is 90 days before the date a Change in Control occurs or
(2) the Effective Date, and ending on the second anniversary of the date the Change in Control occurs. 

  

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	 	(h)	“Code” means the Internal Revenue Code of 1986, as amended. 

  

	 	(i)	“Disability” shall have the meaning given that term under the Trex Company, Inc. Disability Plan, as in effect at the time a determination of Disability is to be
made. 

  

	 	(j)	“Employer” means the Company or an Affiliate. 

  

	 	(k)	“ERISA” means the Employee Retirement Income Security Act of 1974, as amended. 

  

	 	(l)	“Final Pay” means the sum of (1) the greater of (A) the Eligible Employee’s annual base salary in effect immediately prior to the Change of Control,
or (B) the Eligible Employee’s annual base salary in effect at the time employment terminates, and (2) the greater of (A) the Eligible Employee’s targeted cash bonus for the year in which the Change of Control occurs,
(B) the Eligible Employee’s targeted cash bonus for the year in which employment terminates or (C) the actual cash bonus earned by the Eligible Employee for the year immediately prior to the year in which employment terminates.


  

	 	(m)	“Good Reason” means, without the specific written consent of the Eligible Employee, any of the following: 

 (1) A material and adverse change in the Eligible Employee’s status or position(s) as an officer or management employee of the
Employer as in effect immediately prior to the Change in Control, including, without limitation, any adverse change in his status or position as an employee of the Employer as a result of a material diminution in his duties or responsibilities
(other than, if applicable, any such change directly attributable to the fact that the Employer is no longer publicly owned) or the assignment to him of any duties or responsibilities which are materially inconsistent with such status or position(s)
(other than any isolated and inadvertent failure by the Employer that is cured promptly upon his giving notice), or any removal of the Eligible Employee from or any failure to reappoint or reelect him to such position(s) (except in connection with
the Eligible Employee’s Severance other than for Good Reason). 
 (2) A 10% or greater reduction in the Eligible
Employee’s base salary and targeted bonus from the base salary and targeted bonus that was in effective immediately prior to the occurrence of a Change of Control, but disregarding any reduction in targeted bonus which occurs in accordance with
the terms of any written bonus program as it reads immediately prior to the occurrence of a Change of Control. 
  

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 (3) The failure by the Employer or any successor to continue in effect any employee
benefit plan (excluding any equity compensation plan) in which the Eligible Employee is participating at the time of the Change in Control (or plans providing the Eligible Employee with similar benefits that are not materially reduced in the
aggregate) other than as a result of the normal expiration of any such plan in accordance with its terms as in effect at the time of the Change in Control; or the taking of any action, or the failure to act, by the Employer or any successor which
would adversely affect the Eligible Employee’s continued participation in any of such plans on at least as favorable a basis to him as is the case on the date of the Change in Control or which would materially reduce his benefits under any of
such plans. 
 (4) The Employer’s requiring the Eligible Employee to be based at an office that is both more than 50
miles from where his office is located immediately prior to the Change in Control and further from his then current residence, except for required travel on the Employer’s business to an extent substantially consistent with the business travel
obligations which the Eligible Employee undertook on behalf of the Employer prior to the Change in Control. 
  

	 	(n)	“Incentive Plan” means the Trex Company, Inc. 2005 Stock Incentive Plan (or a successor plan). 

  

	 	(o)	“Severance” means (1) the involuntary termination of the Eligible Employee’s employment by the Employer, other than for Cause, death or Disability or
(2) a termination of the Eligible Employee’s employment by the Eligible Employee for Good Reason, in each case, during the Change in Control Protection Period; provided, however, that in each case the termination constitutes a
“separation from service” within the meaning of Section 409A(a)(2)(A)(i) of the Code and Treasury Regulations thereunder. 

  

	 	(p)	“Severance Date” means the date on which the Eligible Employee incurs a Severance. 

 2. Term of Agreement. This Agreement shall remain in effect from the Effective Date through December 31, 2007; provided, however, that (a) the Agreement shall automatically extend for additional
one-year terms unless the Company provides written notice to the Eligible Employee not less than six months before the end of the then-current term; and (b) the Agreement shall automatically extend until the end of the Change in Control
Protection Period if a Change in Control occurs during the term of the Agreement. 
 3. Change in Control Severance Benefits. 
  

	 	(a)	 Generally. Subject to subsections (h) and (i) below and Section 4, the Eligible Employee shall be entitled to the Change in Control
Severance Benefits provided in this Section 3 if he or she incurs a Severance during the Change in Control Protection Period. If the Eligible Employee becomes entitled to receive 



  

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compensation or benefits under the terms of this Section 3, such compensation or benefits will be reduced by other severance benefits payable under any
plan, program, policy or practice of or agreement or other arrangement between the Eligible Employee and the Company. It is intended that the net effect to the Eligible Employee of entitlement to any similar benefits that are contained both in this
Agreement and in any other existing plan, program, policy or practice of or agreement or arrangement between the Eligible Employee and the Company will be to provide the Eligible Employee with the greater of the benefits under this Agreement or
under such other plan, program, policy, practice, or agreement or arrangement. 


  

	 	(b)	Payment of Accrued Obligations. If the Eligible Employee incurs a Severance during the Change in Control Protection Period, the Company shall pay to him a lump sum
payment in cash, no later than 10 days after the Severance Date (or the date of the Change in Control, if later), equal to the sum of (1) the Eligible Employee’s accrued annual base salary and any accrued vacation pay through the Severance
Date, (2) the Eligible Employee’s annual bonus earned for the fiscal year immediately preceding the fiscal year in which the Severance Date occurs if such bonus has not been paid as of the Severance Date, and (3) the Eligible
Employee’s targeted cash bonus for the year in which the Severance occurs, pro-rated based upon the number of days the Eligible Employee was employed during such year. 

  

	 	 (c)
	 Payment of Severance. Subject to subsections (h) and (i) below, if the Eligible Employee incurs a
Severance during the Change in Control Protection Period, the Company shall pay to him a lump sum cash payment, no later than 10 days after the Severance Date (or the date of the Change in Control, if later), equal to two and one-half (2 1/2) times the Eligible Employee’s Final Pay. 


  

	 	(d)	[Intentionally Omitted]. 

  

	 	(e)	 Immediate Vesting of Equity-Based Compensation Awards upon a Change in Control. Subject to subsections (h) and (i) below and any other limitations
imposed by law, if the Eligible Employee incurs a Severance during the Change in Control Protection Period, (1) the unexercised portions of all Options and SARs (as defined in the Incentive Plan) granted to the Eligible Employee under the
Incentive Plan that have not expired or been forfeited pursuant to their terms shall automatically accelerate and become fully exercisable, (2) the restrictions and conditions on all outstanding Restricted Stock (as defined in the Incentive
Plan) granted to the Eligible Employee that have not expired or been forfeited pursuant to their terms shall immediately lapse, and (3) all outstanding Restricted Stock Units and Restricted Stock (as defined in the Incentive Plan) granted to
the Eligible Employee that are based upon performance of the Company over a certain period of time shall become payable at the Eligible Employee’s target payment for the relevant performance period (regardless of the amount of the relevant
performance period that precedes the Change in Control and Severance); 



  

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provided, however, that, where a Severance precedes the Change in Control (i.e., by operation of clause (1) of Section 1(g)) and the terms of any
award granted to the Eligible Employee under the Incentive Plan would otherwise call for the forfeiture of such award upon the termination of the Eligible Employee’s employment with the Company, such award shall not be deemed to be forfeited on
account of the Eligible Employee’s Severance and shall remain outstanding (subject to the other terms of the award, including its original term) as if the Change in Control preceded the Severance. 


  

	 	(f)	Benefit Continuation. Subject to subsections (h) and (i) below, if the Eligible Employee incurs a Severance during the Change in Control Protection Period,
commencing on the date immediately following such Eligible Employee’s Severance Date and continuing for 30 months (or such lesser time as required to avoid the imposition of additional taxes under Section 409A of the Code) (the
“Welfare Benefit Continuation Period”), the Company shall cover the Eligible Employee under the same type of Employer-sponsored group health plan and dental plan (e.g., individual or family coverage) and group life insurance
in which he was covered as of his Severance Date. The Eligible Employee shall receive such continued coverage under the same terms and conditions (e.g., any requirement that employees pay all or any portion of the cost of such coverage) that
would apply if the Eligible Employee had continued to be an employee of the Employer during the Welfare Benefit Continuation Period. 

 For each month during the Welfare Benefit Continuation Period in which the Eligible Employee’s continued coverage under an insured plan is not possible, the Company shall, in lieu of providing the coverage described in the preceding
paragraph, make a monthly cash payment to the Eligible Employee equal to the monthly premium the Employer would be charged for coverage of a similarly-situated employee. The Company shall not be obligated to “gross up” or otherwise
compensate the Eligible Employee for any taxes due on amounts paid pursuant to the preceding sentence. 
 Notwithstanding any other provision
of this subsection (f), the Company’s obligation to provide continued coverage (or, in lieu thereof, make a cash payment) pursuant to this subsection (f) shall expire on the date the Eligible Employee becomes covered under one or more
plans sponsored by a new employer (other than a successor to the Company) that, at the sole discretion of the Administrator, are determined to provide coverage at least equivalent in the aggregate to the benefits continued under this subsection (f).
The coverage period for purposes of the group health continuation requirements of Section 4980B of the Code shall commence at the expiration of the Welfare Benefit Continuation Period. 
  

	 	(g)	Outplacement Services. Subject to subsection (i) below, if the Eligible Employee incurs a Severance during the Change in Control Protection Period, the Company
shall provide him with reasonable outplacement services for up to 12 months following the Severance Date. 

  

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	 	(h)	Release. The Eligible Employee shall not be eligible to receive any Change in Control Severance Benefits provided in this Section 3 (other than payments under
Section 3(b)) unless he first executes a written release and agreement provided by the Company and does not revoke such release and agreement within the time permitted therein for such revocation. 

  

	 	(i)	Restriction on Timing of Distribution. Anything in this Agreement to the contrary notwithstanding, if (1) on the Eligible Employee’s Severance Date, any of the
Company’s stock is publicly traded on an established securities market or otherwise (within the meaning of Section 409A(a)(2)(B)(i) of the Code) and (2) as a result of such termination, the Eligible Employee would receive any payment
that, absent the application of this Section 3(i), would be subject to interest and additional tax imposed pursuant to Section 409A(a) of the Code as a result of the application of Section 409A(2)(B)(i) of the Code, then no such
payment shall be payable prior to the date that is the earliest of (x) six months after the Eligible Employee’s Severance Date, (y) the Eligible Employee’s death or (z) such other date as will cause such payment not to be
subject to such interest and additional tax. 

 4. Excise Tax. 
  

	 	(a)	Gross-Up Payment. Notwithstanding any provision of this Agreement to the contrary, in the event it shall be determined that any payment or distribution whether paid or
payable or distributed or distributable pursuant to the terms of this Agreement or otherwise pursuant to or by reason of any other agreement, policy, plan, program or arrangement (including, without limitation, payments or acceleration of vesting in
respect of any equity-based or other award), or similar right (collectively, a “Payment”), to or for the benefit of the Eligible Employee, would be subject to the excise tax imposed by Section 4999 of the Code, or any successor
provision thereto, or any similar tax imposed by state or local law, or any interest or penalties with respect to such excise tax (such tax or taxes, together with any such interest and penalties, are collectively referred to as the “Excise
Tax”), then the Eligible Employee shall be entitled to receive an additional payment (a “Gross-Up Payment”) in an amount such that, after payment by the Eligible Employee of all taxes (including any interest or penalties
imposed with respect to such taxes), including any Excise Tax, imposed upon the Gross-Up Payment, the Eligible Employee retains an amount of the Gross-Up Payment equal to the Excise Tax imposed upon the Payment. 

  

	 	(b)	 Determination. Subject to subsection (d) below, all determinations required to be made under this Section 4, including whether an Excise Tax is
payable by the Eligible Employee and the amount of such Excise Tax and whether a Gross-Up Payment is required and the amount of such Gross-Up Payment, will be made, at 



  

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the Company’s discretion, by the Company’s outside auditing firm or by a nationally recognized accounting or benefits consulting firm (the
“Firm”) designated by the Company prior to a Change in Control. If the Firm determines that any Excise Tax is payable by the Eligible Employee, the Company will pay the required Gross-Up Payment to the Eligible Employee during the
calendar year following the Severance Date. If the Firm determines that no Excise Tax is payable by the Eligible Employee, it will, at the same time as it makes such determination, furnish the Eligible Employee with an opinion that he has
substantial authority not to report any Excise Tax on his federal, state, local income or other tax return. Any determination by the Firm as to the amount of the Gross-Up Payment will be binding upon the Company and the Eligible
Employee. As a result of the uncertainty in the application of Section 4999 of the Code (or any successor provision thereto) and the possibility of similar uncertainty regarding applicable state or local tax law at the time of any
determination by the Firm hereunder, it is possible that Gross-Up Payments which will not have been made by the Company should have been made (an “Underpayment”), consistent with the calculations required to be made
hereunder. If the Company exhausts or fails to pursue its remedies pursuant to subsection (d) below, and the Eligible Employee thereafter is required to make a payment of any Excise Tax, the Eligible Employee shall so notify the Company,
which will direct the Firm to determine the amount of the Underpayment that has occurred and to submit its determination and detailed supporting calculations to both the Company and the Eligible Employee as promptly as possible. Any such
Underpayment will be paid by the Company to, or for the benefit of, the Eligible Employee within five business days after receipt of such determination and calculations. 


  

	 	(c)	Fees and Expenses. The fees and expenses of the Firm for its services under this Section 4 will be borne by the Company. 

  

	 	(d)	IRS Claim. The Eligible Employee will notify the Company in writing of any claim by the Internal Revenue Service that, if successful, would require the payment by the Company
of a Gross-Up Payment. Such notification will be given as promptly as practicable but no later than 10 business days after the Eligible Employee actually receives notice of such claim and the Eligible Employee will further apprise the Company
of the nature of such claim and the date on which such claim is requested to be paid (in each case, to the extent known by the Eligible Employee). The Eligible Employee will not pay such claim prior to the earlier of (1) the expiration of
the 30-calendar-day period following the date on which he gives such notice to the Company, or (2) the date that any payment of amounts with respect to such claim is due. 

 The Company will bear and pay directly all costs and expenses (including interest and penalties) incurred in connection with contesting such claim and
will indemnify and hold harmless the Eligible Employee, on an after-tax basis, for and against any Excise Tax or income tax, including interest and penalties with respect thereto, imposed as a result of such representation and payment of costs and
expenses. 
  

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 Without limiting the foregoing provisions of this subsection (d), the Company will control all
proceedings taken in connection with the contest of any claim contemplated by this subsection (d) and, at its sole option, may pursue or forego any and all administrative appeals, proceedings, hearings and conferences with the taxing authority
in respect of such claim (provided that the Eligible Employee may participate therein at his own cost and expense) and may, at its option, either direct the Eligible Employee to pay the tax claimed and sue for a refund or contest the claim in any
permissible manner, and the Eligible Employee agrees to prosecute such contest to a determination before any administrative tribunal, in a court of initial jurisdiction and in one or more appellate courts, as the Company will determine. If the
Company directs the Eligible Employee to pay the tax claimed and sue for a refund, the Company will advance the amount of such payment to the Eligible Employee on an interest-free basis and will indemnify and hold harmless the Eligible Employee, on
an after-tax basis, from any Excise Tax or income tax, including interest or penalties thereon, imposed with respect to such advance. Any extension of the statute of limitations relating to payment of taxes for the taxable year of the Eligible
Employee in which the contested amount is claimed to be due is limited solely to such contested amount. Furthermore, the Company’s control of any such contested claim will be limited to issues with respect to which a Gross-Up Payment would
be payable hereunder, and the Eligible Employee will be entitled to settle or contest, as the case may be, any other issue raised by the Internal Revenue Service or any other taxing authority. 
  

	 	(e)	Refund. If, after the receipt by the Eligible Employee of an amount advanced by the Company pursuant to subsection (d) above, the Eligible Employee receives any refund
with respect to such claim, the Eligible Employee will (subject to the Company’s complying with the requirements of subsection (d) above) promptly pay to the Company the amount of such refund (together with any interest paid or credited
thereon after any taxes applicable thereto). If, after the receipt by the Eligible Employee of an amount advanced by the Company pursuant to subsection (d) above, a determination is made that the Eligible Employee will not be entitled to
any refund with respect to such claim, and the Company does not notify the Eligible Employee in writing of its intent to contest such denial or refund prior to the expiration of 30 calendar days after such determination, then such advance will be
forgiven and will not be required to be repaid, and the amount of such advance will offset, to the extent thereof, the amount of Gross-Up Payment required to be paid pursuant to this Section 4. If, after the receipt by the Eligible
Employee of a Gross-Up Payment but before the payment by the Eligible Employee of the Excise Tax, it is determined by the Firm that the Excise Tax payable by the Eligible Employee is less than the amount originally computed by the Firm and
consequently that the amount of the Gross-Up Payment is larger than that required by this Section 4, the Eligible Employee shall promptly refund to the Company the amount by which the Gross-Up Payment initially made to him exceeds the Gross-Up
Payment required under this Section 4. 

  

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 5. Taxes; Withholding. Subject to Section 4, the Eligible Employee shall be responsible for the payment of
all applicable local, state and federal taxes associated with the Eligible Employee’s receipt of Change in Control Severance Benefits hereunder, and the Company shall have the right to deduct from any distributions hereunder any such taxes or
other amounts required by law to be withheld therefrom. 
 6. Claims Procedures. 
  

	 	(a)	Applications for Benefits and Inquiries. Any application for benefits, inquiries about this Agreement or inquiries about present or future rights under this Agreement
must be submitted to the Administrator in writing. 

  

	 	(b)	Denial of Claims. In the event that any application for benefits is denied in whole or in part, the Administrator must notify the applicant, in writing, of the denial of
the application, and of the applicant’s right to review the denial. The written notice of denial will be set forth in a manner designed to be understood by the applicant, and will include specific reasons for the denial, specific
references to the provisions of this Agreement upon which the denial is based, a description of any additional material or information necessary for the applicant to perfect the claim and an explanation of why such material or information is
necessary, and an explanation of the review procedure, including the applicant’s right to bring a civil action under Section 502(a) of ERISA following an adverse decision on review. This written notice will be given to the applicant within
90 days after the Administrator receives the application, unless special circumstances require an extension of time, in which case, the Administrator has up to an additional 90 days. If an extension of time is required, written notice of the
extension will be furnished to the applicant before the end of the initial 90-day period. This notice of extension will describe the special circumstances necessitating the additional time and the date by which the Administrator expects to render a
decision on the application. 

  

	 	(c)	Request for a Review. Any person (or that person’s authorized representative) for whom an application for benefits is denied, in whole or in part, may appeal the
denial by submitting a written request for a review to the Administrator within 60 days after the application is denied. The Administrator will give the applicant (or his or her authorized representative) an opportunity to review pertinent
documents in preparing a request for a review and submit written comments, documents, records and other information relating to the claim. 

  

	 	(d)	 Decision on Review. The Administrator will provide written notice of its decision on review within 60 days after receipt of the request, unless special
circumstances require an extension of time (not to exceed an additional 60 days). If an extension for review is required, written notice of the extension will be 



  

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furnished to the applicant within the initial 60-day period. This notice of extension will describe the special circumstances necessitating the additional
time and the date by which the Administrator expects to render a decision on review. In the event that the Administrator confirms the denial of the application for benefits in whole or in part, the notice will outline, in a manner calculated to be
understood by the applicant, the specific reasons for the decision, the specific provisions of this Agreement upon which the decision is based, a statement that the applicant is entitled to receive, upon request and free of charge, reasonable access
to, and copies of, all documents, records and other information relevant to the applicant’s claim for benefits, and a statement of the applicant’s right to bring an action under Section 502(a) of ERISA.


  

	 	(e)	Rules and Procedures. The Administrator may establish rules and procedures, consistent with this Agreement and with ERISA, as necessary and appropriate in carrying out
its responsibilities in reviewing benefit claims. 

 7. General Provisions 
  

	 	(a)	Amendment and Termination. This Agreement may not be terminated prior to the end of its term without the written consent of the Eligible Employee. This Agreement may
be amended by the Committee at any time; provided, however, that this Agreement may not be amended without the written consent of the Eligible Employee if such amendment would in any manner adversely affect the rights of the Eligible
Employee under this Agreement. 

  

	 	(b)	Assignment. Except as otherwise provided herein or by law, no right or interest of the Eligible Employee under this Agreement shall be assignable or transferable, in whole or
in part, either directly or by operation of law or otherwise, including without limitation by execution, levy, garnishment, attachment, pledge or in any manner; no attempted assignment or transfer thereof shall be effective. Notwithstanding the
preceding sentence, if the Eligible Employee is unable to care for his affairs when a payment is due under this Agreement to the Eligible Employee, payment may be made directly to his legal guardian or personal representative.


  

	 	(c)	Compliance with Law. Notwithstanding subsection (a) above or any other provision of this Agreement to the contrary, the Company may amend, modify or terminate this
Agreement, without the consent of the Eligible Employee, as the Company deems necessary or appropriate to ensure compliance with any law, rule, regulation or other regulatory pronouncement applicable to this Agreement, including, without limitation,
Section 409A of the Code and any Treasury Regulations or other guidance thereunder. 

  

	 	(d)	Governing Law. This Agreement shall be construed and enforced according to the laws of the Commonwealth of Virginia to the extent not preempted by federal law, without regard
to any conflict of laws principles that would apply the law of another jurisdiction. 

  

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	 	(e)	Severability. If any provision of this Agreement shall be held invalid or unenforceable, such invalidity or unenforceability shall not affect any other provisions hereof, and
this Agreement shall be construed and enforced as if such provisions had not been included. 

  

	 	(f)	Headings and Terms. The headings and captions herein are provided for reference and convenience only, shall not be considered part of the Agreement, and shall not be employed
in the construction of the Agreement. Capitalized terms shall have the meanings given herein. Singular nouns shall be read as plural and masculine pronouns shall be read as feminine, and vice versa, as appropriate. 

  

	 	(g)	No Assurance of Employment. Neither the execution and delivery of this Agreement by the Company and the Eligible Employee nor the creation of any fund, trust or account, nor
the payment of any benefits shall be construed as giving the Eligible Employee the right to be retained in the service of the Employer, and the Eligible Employee shall remain subject to discharge to the same extent as if this Agreement had never
been entered into. 

  

	 	(h)	Successors. This Agreement shall inure to the benefit of and be binding upon the heirs, executors, administrators, successors and assigns of the parties, including the
Eligible Employee and any successor to the Company. If the Eligible Employee incurs a Severance during the Change in Control Protection Period but dies before his Change in Control Severance Benefits have been fully paid, any unpaid amounts
shall be paid to the executor, personal representative or administrators of the Eligible Employee’s estate in a lump sum payment no later than the fifteenth day of the third calendar month following the Eligible Employee’s death.


  

	 	(i)	Notice. For purposes of this Agreement, notices and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given
when hand delivered, sent by overnight courier, or mailed by first-class, registered or certified mail, return receipt requested, postage prepaid, or transmitted by telegram, telecopy, or telex, addressed, in the case of the Eligible Employee, to
the Eligible Employee’s address as shown on the Company’s records, and, in the case of the Company or the Administrator, to the Company’s principal office, to the attention of the Chief Executive Officer or to the Chairman of the
Committee, as applicable, or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notices of change of address shall be effective only upon receipt. 

  

	 	(j)	Entire Agreement. This Agreement sets forth the entire agreement of the parties with respect to the subject matter hereof. Any and all prior agreements or understandings with
respect to such matters are hereby superseded. 

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 IN WITNESS WHEREOF, each of the parties has caused this Agreement to be executed as of the day first
above written. 
  

			
	TREX COMPANY, INC.
		
	By:	 	 /s/ Paul D. Fletcher

	Name:	 	Paul D. Fletcher
	Title:	 	Senior Vice President and Chief Financial Officer
	
	ELIGIBLE EMPLOYEE
	
	 /s/ Anthony J. Cavanna

	Name:	 	ANTHONY J. CAVANNA

  

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