Owens Corning

Property, plant and equipment consist of the following:

Machinery and equipment includes certain precious metals used in our production tooling, which comprise approximately 3% and 4% of total machinery and equipment as of September 30, 2026 and December 31, 2025, respectively.

Upon completion of the sale of the GR business in the second quarter of 2026, the Company began selling excess precious metals. As a result, the Company sold certain precious metals resulting in gains of $7 million and $19 million for the three and nine months ended September 30, 2026, respectively. The Company sold certain precious metals resulting inno gains for the three months ended September 30, 2025 and gains of $10 million for the nine months ended September 30, 2025. These gains are included in Other expense, net on the Consolidated Statements of Earnings and are reflected in the Corporate, Other and Eliminations reporting category. The cash proceeds from the sales are included in Net cash flow used for investing activities in the Consolidated Statements of Cash Flows.

We also exchanged certain precious metals used in production tooling for certain other precious metals to be used in production tooling. During the three months ended September 30, 2026, there wereno non-cash exchanges. During the nine months ended September 30, 2026, these non-cash exchanges resulted in a net increase to Machinery and equipment of $10 million and a gain totaling $10 million. During the three and nine months ended September 30, 2025, these non-cash exchanges resulted in a net increase to Machinery and equipment of $14 million and $25 million, as well as gains totaling $14 million and $25 million, respectively. These gains are included in Other expense, net on the Consolidated Statements of Earnings and reflected in the Corporate, Other and Eliminations reporting category. These non-cash investing activities are not included in Net cash flow used by investing activities in the Consolidated Statements of Cash Flows.

During the third quarter of 2026, the Company determined that certain asset groups within our Doors reportable segment should be assessed for recoverability, primarily as a result of the same conditions that precipitated the interim Doors reporting unit goodwill impairment test described in Note 5 of the Consolidated Financial Statements. Recoverability of the long-lived assets, including definite-lived intangibles, was measured by comparing the carrying amount of the asset groups to the future net undiscounted cash flows expected to be generated by the asset groups. These comparisons determined that the asset groups were recoverable.