Exhibit 10.18

SECOND AMENDMENT TO FIRST LIEN CREDIT AGREEMENT

SECOND AMENDMENT (this “Second Amendment”), dated as of October 5, 2016 among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”).

W I T N E S S E T H:

WHEREAS, the Borrower has entered into that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015 and by the First Amendment to the First Lien Credit Agreement dated as of November 30, 2015, the “Credit Agreement”), among the Borrower, Holding, the several Lenders party thereto from time to time, the Administrative Agent, and the Collateral Agent;

WHEREAS, immediately prior to the effectiveness of this Second Amendment, in accordance with Subsection 2.9 of the Credit Agreement, the Borrower has requested Supplemental Term Loan Commitments in an aggregate principal amount of $90.0 million pursuant to an Increase Supplement (the “Increase Supplement”) dated as of the date hereof, by and among the Borrower, each Lender party thereto and the Administrative Agent.

WHEREAS, in connection with the Increase Supplement and pursuant to Subsection 10.1 of the Credit Agreement, the Borrower and the Lenders party hereto, constituting no less than the Required Lenders (determined immediately prior to giving effect to this Second Amendment), agree to the amendment of the Credit Agreement as set forth herein.

NOW, THEREFORE, in consideration of the foregoing, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

SECTION 1. Defined Terms. Capitalized terms used but not defined herein shall have the meanings assigned to such terms in the Credit Agreement.

SECTION 2. Amendment of the Credit Agreement.

(a) Subsection 1.1 of the Credit Agreement is hereby amended by adding the following new definitions, to appear in proper alphabetical order:

“Second Amendment”: the Second Amendment with respect to this Agreement, dated as of October 5, 2016, by and among the Borrower, Holding, the Lenders party thereto, the Administrative Agent and the Collateral Agent.

“Second Amendment Effective Date”: the date on which each of the conditions set forth or referred to in Section 3 of the Second Amendment is satisfied or waived.

“Second Increase Supplement”: the Increase Supplement dated as of October 5, 2016, among the Borrower, each Lender party thereto and the Administrative Agent, pursuant to which the Borrower obtained Supplemental Term Loan Commitments in an aggregate principal amount of $90.0 million.

(b) The definition of “Maximum Incremental Facilities Amount” is hereby amended as follows:

(i) by deleting “$90.0 million” and replacing it with “$180.0 million” in clause (i) of such definition; and

(ii) by adding the following sentence at the end of such definition:

The parties hereto acknowledge and agree that (i) the 2016-1 Supplemental Term Loans (as defined in the Second Increase Supplement), which are in an aggregate principal amount of $90.0 million, are and shall remain incurred in reliance on clause (i) of the definition of Maximum Incremental Facilities Amount and (ii) except as set forth above, as of the Second Amendment Effective Date, no other amount has been incurred in reliance on clause (i) of the definition of Maximum Incremental Facilities Amount.

(c) Subsection 3.4(a) of the Credit Agreement is hereby amended by deleting the final sentence thereof and replacing it with the following sentence:

Each prepayment of Initial Term Loans pursuant to this subsection 3.4(a) made on or prior to the six month anniversary of the Second Amendment Effective Date with Net Cash Proceeds received by the Borrower or any Restricted Subsidiary from its incurrence of new Indebtedness in a Repricing Transaction shall be accompanied by the payment of the fee required by subsection 3.4(i).

(d) Subsection 3.4(i) of the Credit Agreement is hereby amended and restated in its entirety as follows:

(i) Notwithstanding the foregoing, if on or prior to the date that is six months after the Second Amendment Effective Date the Borrower makes a voluntary prepayment (or mandatory prepayment with the proceeds of Specified Refinancing Term Loans) of all or any portion of the outstanding Initial Term Loans pursuant to a Repricing Transaction, the Borrower shall pay to the Administrative Agent, for the ratable account of each Initial Term Loan Lender, a prepayment premium of 1.0% of the aggregate principal amount of Initial Term Loans being prepaid. If, on or prior to the date that is six months after the Second Amendment Effective Date, any Initial Term Loan Lender is replaced pursuant to subsection 10.1(g) in connection with any amendment of this Agreement (including in connection with any refinancing transaction permitted under

subsection 10.6(g) to replace the Initial Term Loans) that results in a Repricing Transaction, such Lender (and not any Person who replaces such Lender pursuant to subsection 2.5(e) or 10.1(g)) shall receive a fee equal to 1.0% of the principal amount of the Initial Term Loans of such Lender assigned to a replacement Lender pursuant to subsection 2.5(e) or 10.1(g).

(e) Subsection 7.1(b)(iii)(A) of the Credit Agreement is hereby amended by deleting “date hereof” and replacing it with “Second Amendment Effective Date”.

SECTION 3. Conditions to Effectiveness of Second Amendment. The effectiveness of this Second Amendment is subject to the satisfaction or waiver of the following conditions:

(a) Second Amendment. The Administrative Agent shall have received the following, each of which shall be originals or facsimiles or “.pdf” or “tiff” files unless otherwise specified, each dated as of the Second Amendment Effective Date:

(i) this Second Amendment executed and delivered by a duly authorized officer of the Borrower, the Administrative Agent and Lenders constituting no less than the Required Lenders (determined immediately prior to giving effect to this Second Amendment); and

(ii) the Increase Supplement executed and delivered by a duly authorized officer of the Borrower and the Lenders party thereto.

(b) Fees and Expenses. All costs, fees, expenses (including legal fees and expenses) and other compensation contemplated under the Credit Agreement or as separately agreed to by the Borrower and Credit Suisse Securities (USA) LLC prior to the date hereof payable to Credit Suisse Securities (USA) LLC, the Administrative Agent or the Lenders, shall have been paid to the extent due.

(c) Payment of Interest. The Borrower shall have made the Accelerated Interest Payment (as defined in Section 4(d) below).

SECTION 4. Effects on Loan Documents; Acknowledgement.

(a) Except as expressly set forth herein, (i) this Second Amendment shall not by implication or otherwise limit, impair, constitute a waiver of or otherwise affect the rights and remedies of the Lenders, the Administrative Agent, the Collateral Agent or the Loan Parties under the Credit Agreement or any other Loan Document, and (ii) shall not alter, modify, amend or in any way affect any of the terms, conditions, obligations, covenants or agreements contained in the Credit Agreement or any other provision of the Credit Agreement or any other Loan Document. Each and every term, condition, obligation, covenant and agreement contained in the Credit Agreement or any other Loan Document is hereby ratified and re-affirmed in all respects and shall continue in full force and effect and nothing herein can or may be construed as a novation thereof. On and as of the Second Amendment Effective Date, each Loan Party reaffirms its obligations under the Loan

Documents to which it is party and the validity, enforceability and perfection of the Liens granted by it pursuant to the Security Documents. This Second Amendment shall constitute a Loan Document for purposes of the Credit Agreement and each other Loan Document and from and after the Second Amendment Effective Date, all references to the Credit Agreement in any Loan Document and all references in the Credit Agreement to “this Agreement”, “hereunder”, “hereof” or words of like import referring to the Credit Agreement, shall, unless expressly provided otherwise, refer to the Credit Agreement as amended by this Second Amendment. Each of the Loan Parties hereby consents to this Second Amendment and confirms and reaffirms all obligations of such Loan Party under the Loan Documents (as amended pursuant to this Second Amendment) to which such Loan Party is a party.

(b) Without limiting the foregoing, each of the Loan Parties party to the Guarantee and Collateral Agreement or any other Security Documents, in each case as amended, supplemented or otherwise modified from time to time, hereby (i) acknowledges and agrees that the Supplemental Term Loans incurred pursuant to the Increase Supplement are Initial Tenn Loans, (ii) acknowledges and agrees that all of its obligations under the Guarantee and Collateral Agreement and the other Security Documents to which it is a party are reaffirmed and remain in full force and effect on a continuous basis, (iii) reaffirms each Lien granted by each Loan Party to the Collateral Agent for the benefit of the Secured Parties and reaffirms the guaranties made pursuant to the Guarantee and Collateral Agreement, (iv) acknowledges and agrees that the grants of security interests by and the guaranties of the Loan Parties contained in the Guarantee and Collateral Agreement and the other Security Documents are, and shall remain, in full force and effect after giving effect to this Second Amendment and the incurrence of the Supplemental Term Loans under the Increase Supplement, and (v) agrees that the Borrower Obligations and the Guarantor Obligations (each as defined in the Guarantee and Collateral Agreement) include, among other things and without limitation, the prompt and complete payment and performance by the Borrower when due and payable (whether at the stated maturity, by acceleration or otherwise) of principal and interest on the Supplemental Term Loans incurred pursuant to the Increase Supplement.

(c) The Administrative Agent shall promptly notify the Borrower of the occurrence of the Second Amendment Effective Date and such notice shall be conclusive and binding.

(d) On the Funding Date and prior to the incurrence of the 2016-1 Supplemental Term Loans (each as defined below), and notwithstanding anything in the Credit Agreement to the contrary, including but not limited to Section 3.1(d) or 3.8(a) of the Credit Agreement, the Borrower shall pay all accrued and unpaid interest up to but excluding the Funding Date, in respect of all of the then outstanding Initial Term Loans (such interest payment, the “Accelerated Interest Payment”). Subject to the foregoing, it is understood and agreed that from and after the Funding Date, (i) the Initial Term Loans shall accrue interest at the per annum interest rates provided for in the Credit Agreement and the applicable borrowing, continuation or conversion notice, as applicable, for each outstanding Borrowing of Initial Term Loans (collectively, the “Initial Term Loan Notice”) and (ii) the Borrower shall pay accrued and unpaid interest (for the avoidance of doubt, not previously paid in accordance with the immediately preceding sentence) on the Initial Term Loans on the dates

and as otherwise set forth in the Credit Agreement and the applicable Initial Term Loan Notice. As used in this Section 4(d), the terms “Funding Date” and “2016-1 Supplemental Term Loans” shall have the meanings assigned to such terms in the Increase Supplement.

SECTION 5. Counterparts. This Second Amendment may be executed in any number of counterparts and by different parties hereto on separate counterparts, each of which when so executed and delivered shall be deemed to be an original, but all of which when taken together shall constitute a single instrument. Delivery of an executed counterpart of a signature page of this Second Amendment by facsimile or any other electronic transmission shall be effective as delivery of a manually executed counterpart hereof.

SECTION 6. Governing Law. THIS SECOND AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES UNDER THIS SECOND AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

SECTION 7. Headings. The headings of this Second Amendment are for purposes of reference only and shall not limit or otherwise affect the meaning hereof.

[Remainder of page intentionally left blank.]

IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment to be duly executed and delivered as of the day and year first above written.

LBM BORROWER, LLC, as Borrower


By:	/s/ Brian Hein
Name:		Brian Hein
Title:		Assistant Vice President