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OWENS CORNING NEWS RELEASE Owens Corning Reports First - Quarter 2021 Results 4/28/2021 Company Delivered Net Sales of $ 1.9 Billion ; Generated Net Earnings of $ 210 Million and Adjusted EBIT of $ 282 Million • Delivered record first quarter net sales , net earnings and adjusted EBIT Roofing produced $ 156 million of EBIT with 22 % EBIT margins • Insulation delivered $ 82 million of EBIT with 12 % EBIT margins • Composites reported $ 79 million of EBIT with 14 % EBIT margins • Generated operating cash flow of $ 204 million and free cash flow of $ 120 million TOLEDO , Ohio -- ( BUSINESS WIRE ) -- Owens Corning ( NYSE : OC ) today reported consolidated net sales of $ 1.9 billion , an increase of 20 % compared with 2020 . First - quarter 2021 net earnings attributable to Owens Corning were $ 210 million , or $ 1.98 per diluted share , compared with net loss attributable to Owens Corning of $ 917 million , or $ 8.43 per diluted share , in first - quarter 2020. The company's first - quarter 2020 results included non - cash pre - tax impairment charges of $ 987 million driven by the economic uncertainties associated with the COVID - 19 pandemic . 1