Exhibit 99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

The accompanying unaudited pro forma condensed combined statement of operations for the year ended December 31, 2014 and as of and for the three months ended March 31, 2015 and the unaudited pro forma condensed combined balance sheet as of March 31, 2015 and the related notes thereto have been derived by the application of pro forma adjustments based upon the historical financial statements of Builders FirstSource, Inc. (“Builders”) and ProBuild Holdings, Inc. (the “ProBuild Parent”), of which ProBuild Holdings LLC (“ProBuild”) is a wholly-owned subsidiary, after giving effect to the transactions contemplated by the Securities Purchase Agreement dated as of April 13, 2015, by and between Builders, ProBuild and the holders of ProBuild’s securities named as parties thereto (the “ProBuild Acquisition Transactions”), in connection with the acquisition by Builders of all of the operating affiliates of ProBuild through the purchase of all of the issued and outstanding equity interests of ProBuild for approximately $1.63 billion, subject to certain adjustments (the “ProBuild Acquisition”) and related adjustments described in the following notes, and are intended to reflect the impact of the ProBuild Acquisition Transactions on Builders on a pro forma basis.

On July 31, 2015 (the “Closing Date”), Builders completed the ProBuild Acquisition and the ProBuild Acquisition Transactions. For more information, see Item 2.02 of Builders’ current report on Form 8-K under which this Exhibit 99.2 is filed.

The final terms of the ProBuild Acquisition Transactions will be subject to market conditions and may change materially from the assumptions described in the following unaudited pro forma condensed combined financial information. Changes in assumptions described below with respect to the ProBuild Acquisition Transactions would result in changes to various components of the unaudited pro forma condensed combined balance sheet, including long-term debt and stockholders’ equity, and various components of the unaudited pro forma condensed combined statement of operations, including interest expense and earnings per share. Depending upon the nature of the changes, the impact on the unaudited pro forma condensed combined financial information could be material.

The final purchase price allocation for the ProBuild Acquisition Transactions will be performed after the Closing Date and will depend on final asset and liability valuations, which may depend in part on prevailing market rates and conditions. These final valuations will be based on the actual net tangible and intangible assets that exist as of the Closing Date. Any final adjustments may change the allocations of purchase price, which could affect the fair value assigned to the assets acquired and liabilities assumed, and could result in a change to the unaudited pro forma condensed combined financial information, including goodwill. The result of the final purchase price allocation could be materially different from the preliminary allocation set forth herein.

The unaudited pro forma condensed combined financial information has been prepared to reflect adjustments to Builders’ historical consolidated financial information that are (i) directly attributable to the ProBuild Acquisition, (ii) factually supportable and (iii) with respect to the unaudited pro forma combined statement of operations, expected to have a continuing impact on the combined results. The differences between the actual valuations and the current estimated valuations used in preparing the unaudited pro forma condensed combined financial information may be material and will be reflected in Builders’ future balance sheets and may affect amounts, including depreciation and amortization expense, which Builders will recognize in its statement of operations following the acquisition. The unaudited pro forma condensed combined financial information is not intended to represent or be indicative of the consolidated results of operations or financial position of Builders that would have been reported had the ProBuild Acquisition Transactions been completed as of the dates presented, and should not be taken as representative of the future consolidated results of operations or financial position of Builders. The unaudited pro forma condensed combined financial information does not reflect any operating efficiencies and cost savings that Builders may achieve with respect to combining the companies or costs to integrate the business. Synergies and integration costs have been excluded from consideration because they do not meet the criteria for unaudited pro forma adjustments.

The unaudited pro forma condensed combined financial information is provided for informational and illustrative purposes only and should be read in conjunction with the audited consolidated financial statements and the notes related thereto for Builders and ProBuild for the years ended December 31, 2012, 2013 and 2014, each of which, for Builders, is included in Builders’ annual reports filed on Form 10-K for the respective years, and for ProBuild, in Exhibit 99.1 to the Builders’ current report on Form 8-K dated May 28, 2015, and the unaudited condensed consolidated financial statements and the notes related thereto for the three months ended March 31, 2014 and 2015 and as of the three months ended March 31, 2015, which, for Builders, are included in Builders’ quarterly report on Form 10-Q for the three months ended March 31, 2015 and, for ProBuild, are included in Exhibit 99.2 to the Builders’ current report on Form 8-K dated May 28, 2015.

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The following unaudited pro forma condensed combined financial information was prepared using the acquisition method of accounting for business combinations under the guidance in Accounting Standards Codification (“ASC”) Topic 805, Business Combinations, and in accordance with Article 11 of Regulation S-X. The unaudited pro forma condensed combined balance sheet reflects the ProBuild Acquisition Transactions as if they had been consummated on March 31, 2015 and includes pro forma adjustments for preliminary valuations of certain tangible and intangible assets by management in accordance with the acquisition agreement dated April 13, 2015. The unaudited pro forma condensed combined statement of operations for the year ended December 31, 2014 combines Builders’ historical results for the year ended December 31, 2014 with the ProBuild Parent’s historical results for the year ended December 31, 2014 and the unaudited pro forma condensed combined statement of operations for the three months ended March 31, 2015 combines Builders’ historical results for the three months ended March 31, 2015 with the ProBuild Parent’s historical results for the three months ended March 31, 2015. The unaudited pro forma condensed combined statement of operations gives effect to the ProBuild Acquisition Transactions as if they had been consummated on January 1, 2014.

The unaudited pro forma condensed combined financial information has been compiled in a manner consistent with the accounting policies adopted by Builders. These accounting policies are similar in most material respects to those of the ProBuild Parent. Following the ProBuild Acquisition, Builders will perform a more detailed review of the ProBuild Parent’s accounting policies. As a result of that review, differences may be identified between the accounting policies of the two companies that, when conformed, could have a material impact on the combined financial statements.

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Unaudited Pro Forma Condensed Combined Statement of Operations For the Three Months Ended March 31, 2015

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Unaudited Pro Forma Condensed Combined Statement of Operations For the Year Ended December 31, 2014

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Unaudited Pro Forma Condensed Combined Balance Sheet As of March 31, 2015

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Notes to Unaudited Pro Forma Condensed Combined Financial Information

On April 13, 2015, Builders entered into a Securities Purchase Agreement (the “Agreement”) with ProBuild Holdings LLC, and the holders of securities of ProBuild named as parties thereto (collectively, the “Sellers”). Pursuant to the Agreement, Builders will acquire all of the operating affiliates of ProBuild through the purchase of all of the issued and outstanding equity interests of ProBuild for approximately $1.63 billion, subject to working capital adjustments and other adjustments (the “ProBuild Acquisition”).

On July 16, 2015, Builders offered $700,000,000 aggregate principal amount of 10.75% senior notes due 2023 (the “Senior Unsecured Notes”). Concurrently with the issuance of the Senior Unsecured Notes, Builders expects to enter into a new credit agreement governing the terms of a new $600.0 million senior secured term loan facility (the “First Lien Facility”) with Deutsche Bank AG New York Branch, as administrative agent and collateral agent, and the lenders and financial institutions party thereto from time to time, and the terms of an amended and restated senior secured ABL facility with an initial aggregate borrowing capacity of $800.0 million (the “ABL Facility”), with SunTrust Bank, as administrative agent and collateral agent, and the lenders and financial institutions party thereto from time to time. A portion of the proceeds of the borrowings will be used on the closing date of the ProBuild Acquisition to pay a portion of the aggregate acquisition consideration, to refinance certain of Builders’ existing debt and to pay related fees and expenses.

The unaudited pro forma condensed combined financial information included herein has been prepared pursuant to the rules and regulations of the SEC. Certain information and certain footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations; however, management believes that the disclosures are adequate to make the information presented not misleading.

Following the ProBuild Acquisition, Builders will conduct a review of accounting policies of ProBuild in an effort to determine if differences in accounting policies require reclassification of results of operations or reclassification of assets or liabilities to conform to the Builders’ accounting policies and classifications. As a result of that review, Builders may identify differences among the accounting policies of the companies that, when conformed, could have a material impact on the Unaudited pro forma condensed combined financial information. Builders has completed a preliminary review of accounting policies for purposes of the unaudited pro forma condensed combined financial information. During the preparation of the unaudited pro forma condensed combined financial information, Builders identified a significant difference in accounting policy in regards to accounting for inventory. Builders accounts for the cost of inventory using the weighted average method, the use of which approximates the first-in, first-out method. The ProBuild Parent accounts for the cost of inventory using last-in, first-out method. An adjustment has been made in the unaudited pro forma condensed combined financial information to conform the ProBuild Parent’s inventory cost policy to Builders’.

The audited combined financial statements of the ProBuild Parent reflect all of the operations of the business to be acquired by Builders. Net liabilities, included in the audited combined financial statements of the ProBuild Parent, not assumed in the acquisition were approximately $644.4 million as described in footnote 6(g). Financial information presented in the “Historical ProBuild” column in the unaudited pro forma condensed combined statement of operations represents the historical combined statement of operations of the ProBuild Parent for the year ended December 31, 2014 and for the three months ended March 31, 2014 and March 31, 2015, respectively. Such financial information has been reclassified or classified to conform to the historical presentation in the Builders’ consolidated financial statements as set forth below. Unless otherwise indicated, defined line items included in the footnotes have the meanings given to them in the historical financial statements of the ProBuild Parent.

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Reclassifications incorporated in the unaudited pro forma condensed combined statement of operations for the year ended December 31, 2014:

Reference:

Reclassifications incorporated in the unaudited pro forma condensed combined statement of operations for the three months ended March 31, 2015:

Reference:

Adjustment also represents incremental depreciation of production-related assets of $2.0 million and $0.4 million, based on the fair value of property, plant and equipment, for the year ended December 31, 2014 and for the three months ended March 31, 2015, respectively.

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Depreciable property and equipment is expected to be amortized on a straight-line basis over an estimated average useful life of 7 years. Intangible assets are expected to be amortized on a straight-line basis over estimated useful lives of 15—20 years.

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Builders estimates the weighted average interest rate on the new debt incurrence to be approximately 7.3%. A hypothetical 1/8% increase or decrease in the expected weighted average interest rate on financing incurred in connection with the Transactions, including from an increase in LIBOR (excluding the impact of the LIBOR floor), would increase or decrease interest expense on Builders’ financing by approximately $2.6 million annually.

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Under the acquisition method of accounting, the total estimated purchase price is allocated to ProBuild’s net tangible and intangible assets based on their estimated fair values at the date of the completion of the acquisition.

Below is a preliminary estimate of the purchase consideration for ProBuild, adjustment to the historical book value for net assets not acquired and the allocation of the purchase price to acquired identifiable assets and assumed liabilities.

The purchase price allocation for the ProBuild Acquisition includes values assigned to certain specific identifiable intangible assets aggregating approximately $523.7 million. The trade name related intangible assets are valued at $254.7 million, which was determined by estimating the present value of future royalty costs that will be avoided due to Builders’ ownership of the trade names acquired. The customer-related intangible is valued at $269.0 million, which was determined by estimating the present value of expected future net cash flows derived from such customers.

Inventories are increased to their estimated fair value, which represents an amount equivalent to estimated selling prices less distribution related costs and a normative selling profit. This inventory adjustment is expected to be fully recognized in cost of sales in the first three months after the transaction. We expect this step-up in basis and amortization of this amount to have a negative effect on gross margins until fully recognized.

Upon closing, the purchase consideration will be adjusted for working capital levels and other adjustments as stipulated in the purchase agreement.

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Upon completion of the fair value assessment, Builders anticipates that the final purchase price allocation will differ from the preliminary assessment provided above. Any changes to the initial estimates of the fair value of the assets and liabilities will be recorded as adjustments to those assets and liabilities and the residual amounts will be allocated as an increase or decrease to goodwill.

Deferred financing fees of $52.2 million have been recorded, with $7.5 million classified as other current assets and $44.7 million classified as non-current assets. The proceeds from the First Lien Facility have been reduced by a $6.0 million original issue discount, which is presented as a reduction of the outstanding balance on the First Lien Term Loan on the balance sheet.

Deferred financing fees incurred in relation to the First Lien Facility, ABL Facility and Senior Unsecured Notes will be amortized over the contractual term of such respective facilities. Amounts related to the original issue discount will be amortized over the contractual term of the First Lien Facility.

Deferred financing fees of $3.4 million relating to ProBuild’s previous credit facility have been eliminated from other current assets ($2.2 million) and other assets, net ($1.2 million) with a corresponding decrease to retained earnings. No adjustment has been made to the unaudited pro forma condensed combined statements of operations for these costs as they are non-recurring.

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