Item 6. Exhibits

Exhibit Number		Description

3.1		Amended and Restated Certificate of Incorporation of Builders FirstSource, Inc. (incorporated by reference to Exhibit 3.1 to Amendment No. 4 to the Registration Statement of the Company on Form S-1, filed with the Securities and Exchange Commission on June 6, 2005, File Number 333-122788)

3.2		Amendment to Amended and Restated Certificate of Incorporation of Builders FirstSource, Inc. (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed with the SEC on January 4, 2021, File Number 0-51357)

3.3		Amended and Restated By-Laws of Builders FirstSource, Inc. (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K, filed with the Securities and Exchange Commission on August 14, 2020, File Number 0-51357)

4.1		Indenture, dated as of July 23, 2021, among Builders FirstSource, Inc., the guarantors party thereto and Wilmington Trust, National Association, as trustee (form of Note included therein) (incorporated by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K, filed with the Securities and Exchange Commission on July 23, 2021, File Number 001-40620)

31.1*		Certification of Chief Executive Officer pursuant to 17 CFR 240.13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed by David E. Flitman as Chief Executive Officer

31.2*		Certification of Chief Financial Officer pursuant to 17 CFR 240.13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed by Peter M. Jackson as Chief Financial Officer

32.1**		Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed by David E. Flitman as Chief Executive Officer and Peter M. Jackson as Chief Financial Officer

101*		The following financial information from Builders FirstSource, Inc.’s Form 10-Q filed on November 4, 2021 formatted in Inline eXtensible Business Reporting Language (“Inline XBRL”): (i) Condensed Consolidated Statement of Operations for the three and nine months ended September 30, 2021 and 2020, (ii) Condensed Consolidated Balance Sheet as of September 30, 2021 and December 31, 2020, (iii) Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020, (iv) Condensed Consolidated Statements of Changes in Stockholders’ Equity for the three and nine months ended September 30, 2021 and 2020 and (v) the Notes to Condensed Consolidated Financial Statements.

104*		The cover page for the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021 has been formatted in Inline XBRL.

*	Filed herewith.

**	Builders FirstSource, Inc. is furnishing, but not filing, the written statement pursuant to Title 18 United States Code 1350, as added by Section 906 of the Sarbanes-Oxley Act of 2002, of David E. Flitman our Chief Executive Officer, and Peter M. Jackson, our Chief Financial Officer.

SIGNAT****URES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	BUILDERS FIRSTSOURCE, INC.

	/s/ DAVID E. FLITMAN
	David E. Flitman
	President and Chief Executive Officer
	(Principal Executive Officer)

November 4, 2021

	/s/ PETER M. JACKSON
	Peter M. Jackson
	Executive Vice President and Chief Financial Officer (Principal Financial Officer)

November 4, 2021

	/s/ JAMI COULTER
	Jami Coulter
	Senior Vice President and Chief Accounting Officer
	(Principal Accounting Officer)

November 4, 2021

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