GMS Investor Presentation — August 2018

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Investor Presentation

Safe Harbor and Basis of Presentation

Forward -Looking Statement Safe Harbor -This presentation includes "forward-looking statements" within the meaning of the Private Securities Litigation

Reform Act of 1995. All of these forward -looking statements are based on estimates and assumptions made by our management that, although believed by

us to be reasonable, are inherently uncertain. Examples of forward -looking statements include those related to net sales, gross profit, gross margins, capital

expenditures and market share growth, as well as non-GAAP financial measures such as Adjusted EBITDA, the ratio of debt-to-Adjusted EBITDA, adjusted

net income and base business sales, including any management expectations or outlook for fiscal 2019 and beyond. In addition, statements regarding

potential acquisitions and future greenfield locations and statements regarding the impact of the recent tax legislation, fis cal2018 and 2019 effective tax

rates and the expected use of tax savings are forward -looking statements, as well as statements regarding the markets in which the Company or Titan

operates, product expansion opportunities and the potential for growth in the commercial, residential and repair and remodeli ng,or R&R, markets. In

addition, statements relating to the Titan acquisition, including the combination of best practices, statements regarding expect ed synergies, cost savings,

margin improvement, expected accretion and its expected contribution to the Company’s Adjusted EBITDA for the eleven months endi ng April 30, 2019, are

forward-looking statements. Forward -looking statements involve risks and uncertainties, including, but not limited to, economic, competitive, governmental

and technological factors outside of our control, that may cause our business, strategy or actual results to differ materially from the forward-looking