Slide 1: Second-Quarter 2026 Results
SECOND-QUARTER 2026 RESULTS Brian Chambers | Chair & Chief Executive Officer Todd Fister | Chief Financial & Operating Officer August 5, 2026 | Q2 2026
Slide 2: Forward-Looking Statements and Non-GAAP Measures
FORWARD-LOOKING STATEMENTS AND NON-GAAP MEASURES This presentation and the associated remarks contain forward-looking statements. We caution you against relying on these statements as they are subject to risks, uncertainties and other factors and actual results may differ materially from those resul
Slide 3: Agenda
AGENDA COMPANY HIGHLIGHTS Brian Chambers FINANCIAL RESULTS Todd Fister BUSINESS OUTLOOK Brian Chambers QUESTIONS AND DISCUSSION All Owens Corning Demonstrates Value of Reshaped Company; Delivers Strong Results from Continuing Operations in the Second Quarter 3
Slide 4: Owens Corning Highlights
OWENS CORNING HIGHLIGHTS Celebrated second annual Global Safety ($ in millions)1 Q2 2026 Q2 2025 YTD 2026 YTD 2025 Week, reinforcing OC’s shared Net sales 2,756 2,747 5,021 5,277 commitment to work safely Adjusted EBITDA 660 703 1,029 1,268 Adjusted EBITDA as % of net sales 24% 26% 20% 24% Returned
Slide 5: Financial Summary
FINANCIAL SUMMARY ($ in millions, except per share data)1 Q2 2026 Q2 2025 YTD 2026 YTD 2025 Net sales 2,756 2,747 5,021 5,277 Net sales growth —% 10% (5)% 17% Net (loss) earnings attributable to OC 310 334 348 589 Net (loss) earnings attributable to OC as % of net sales 11% 12% 7% 11% Adjusted EBITD
Slide 6: Balance Sheet and Capital Deployment
BALANCE SHEET AND CAPITAL DEPLOYMENT Capital allocation strategy remains focused on consistently generating strong free cash flow, returning $1b to shareholders in 2026, and maintaining an investment grade balance sheet, while executing on business strategies to grow the company Second-Quarter 2026:
Slide 7: Roofing Business
ROOFING BUSINESS ($ in millions)1 Q2 2026 Q2 2025 YTD 2026 YTD 2025 Net sales 1,313 1,303 2,273 2,423 Delivered second-quarter revenue of EBITDA 441 457 672 789 $1.3b, up 1% from prior year EBITDA as % of net sales 34% 35% 30% 33% Generated $441mm of EBITDA with 34% EBITDA margin Five-year financial
Slide 8: Insulation Business
INSULATION BUSINESS ($ in millions)1 Q2 2026 Q2 2025 YTD 2026 YTD 2025 Net sales 971 934 1,838 1,843 Delivered second-quarter revenue of EBITDA 213 225 380 450 $971mm, up 4% from prior year EBITDA as % of net sales 22% 24% 21% 24% Generated $213mm of EBITDA with 22% EBITDA margin Five-year financial
Slide 9: Doors Business
DOORS BUSINESS ($ in millions) Q2 2026 Q2 2025 YTD 2026 YTD 2025 Net sales 513 554 988 1,094 Delivered second-quarter revenue of EBITDA 57 75 91 143 $513mm, down 7% from prior year, driven primarily by strategic business EBITDA as % of net sales 11% 14% 9% 13% exits Generated $57mm of EBITDA with 11
Slide 10: Full-Year 2026 Key Financial Outlook
FULL-YEAR 2026 KEY FINANCIAL OUTLOOK1 FY 2026 General corporate EBITDA expenses $245mm - $255mm Interest expense $255mm - $265mm Full-year effective tax rate2 24% - 26% Capital additions Approximately $800mm Depreciation and amortization Approximately $680mm 1. Continuing operations 2. Cash taxes ar
Slide 11: Q3 2026 Business Outlook
Q3 2026 BUSINESS OUTLOOK ENTERPRISE: • Revenue for continuing operations of approximately $2.6b to $2.7b, slightly below Q3 2025 • Expect North America residential markets to remain under some pressure versus prior year • Anticipate North America non-residential construction to remain stable and con
Slide 12: Questions and Discussion
QUESTIONS AND DISCUSSION
Slide 13: Appendix A: Non-GAAP Reconciliations – Table 1
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 1 The adjusting income (expense) items to EBITDA are shown in the tables below (in millions): Last Twelve Months (LTM) Three Months Six Months Ended Ended June Twelve Months Ended December 31, Ended June 30, June 30, 30, 2026 2022 2023 2024 2025 (A) 2025
Slide 14: Appendix A: Non-GAAP Reconciliations – Table 2
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 2 The reconciliation of Net earnings from continuing operations attributable to Owens Corning to Adjusted EBITDA from continuing operations is shown in the table below (in millions): Three Months Ended Six Months Ended June 30, June 30, 2026 2025 2026 202
Slide 15: Appendix A: Non-GAAP Reconciliations – Table 3
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 3 The reconciliation from Net earnings (loss) attributable to Owens Corning to Adjusted EBITDA is shown in the tables below (in millions): Twelve Months Ended December 31, 2022 2023 Net earnings attributable to Owens Corning $ 1,241 $ 1,196 Less: Net (los
Slide 16: Appendix A: Non-GAAP Reconciliations – Table 4
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 4 The reconciliation from Net earnings from continuing operations attributable to Owens Corning to Adjusted EBITDA from continuing operations is shown in the table below (in millions): Twelve Months Ended December 31, 2024 Net earnings from continuing ope
Slide 17: Appendix A: Non-GAAP Reconciliations – Table 5
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 5 The reconciliation from Net earnings from continuing operations attributable to Owens Corning to Adjusted EBITDA from continuing operations and the calculation of net operating profit after tax (NOPAT) from continuing operations are shown in the table b
Slide 18: Appendix A: Non-GAAP Reconciliations – Table 6
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 6 The calculations of net operating profit after tax (NOPAT) from continuing operations, total capital and return on capital (ROC) from continuing operations are shown in the table below (in millions): Last Twelve Months Ended, June 30, 2026 June 30, 2025
Slide 19: Appendix A: Non-GAAP Reconciliations – Table 7
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 7 A reconciliation from Net (loss) earnings from continuing operations attributable to Owens Corning to Adjusted earnings from continuing operations and a reconciliation from Diluted earnings per share from continuing operations to Adjusted diluted earnin
Slide 20: Appendix A: Non-GAAP Reconciliations – Table 8
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 8 The reconciliation of LTM EBITDA from continuing operations for the Company's segments is shown in the tables below (in millions): Last Twelve Twelve Months Months (LTM) Ended Ended June 30, Three Months Ended June 30, December 31, Six Months Ended June
Slide 21: Appendix A: Non-GAAP Reconciliations – Table 9
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 9 The reconciliation from Net cash flow provided by operating activities to free cash flow is shown in the table below (in millions): Three Months Ended Six Months Ended June 30, June 30, 2026 2025 2026 2025 NET CASH FLOW PROVIDED BY OPERATING ACTIVITIES
Slide 22: Appendix A: Non-GAAP Reconciliations – Table 10
APPENDIX A: NON-GAAP RECONCILIATIONS – TABLE 10 Net debt (a non-GAAP financial measure) is defined by the Company as total borrowings, less cash and cash equivalents. The reconciliation from 'Total debt to Net earnings from continuing operations attributable to Owens Corning' to 'Net debt to Adjuste