Designated Filer: Warburg Pincus Private Equity IX, L.P.

Issuer & Ticker Symbol: Builders FirstSource, Inc. (BLDR)

Date of Event Requiring Statement: March 7, 2012

JOINT FILERS’ NAMES AND ADDRESSES

1.	Name:	Warburg Pincus IX LLC
	Address:	c/o Warburg Pincus LLC
		450 Lexington Avenue
		New York, NY 10017
2.	Name:	Warburg Pincus Partners LLC
	Address:	c/o Warburg Pincus LLC
		450 Lexington Avenue
		New York, NY 10017
3.	Name:	Warburg Pincus LLC
	Address:	450 Lexington Avenue
		New York, NY 10017
4.	Name:	Warburg Pincus & Co.
	Address:	450 Lexington Avenue
		New York, NY 10017
5.	Name:	Charles R. Kaye
	Address:	c/o Warburg Pincus LLC
		450 Lexington Avenue
		New York, NY 10017
6.	Name:	Joseph P. Landy
	Address:	c/o Warburg Pincus LLC
		450 Lexington Avenue
		New York, NY 10017