. REVENUE
We disaggregate revenue from contracts with customers into major product lines. We have determined that disaggregating revenue into these categories depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors.
The Company conducts business through three operating segments: Siding, OSB and LPSA. In the fourth quarter of 2025, the Company determined that LPSA did not meet the reportable segment criteria and beginning with the fourth quarter of 2025, the financial information for the LPSA operating segment is included in Other. These changes had no impact on our consolidated results of operations or financial position. Prior period segment information has been recast to conform to our current presentation. Our other operating segments, Siding and OSB remain reportable operating segments. Other now comprises our South American operations and other products that are not individually significant. See “Note 15 - Segment Information” of the Notes to the Consolidated Financial Statements included in Item 8 of this annual report on Form 10-K for further information regarding our reportable segments.
The following table presents revenues disaggregated by revenue source (dollar amounts in millions): | | | | | | | | | | | | | | | | | |
| Year Ended December 31, |
| 2025 | | 2024 | | 2023 |
| Siding | $ | 1,679 | | | $ | 1,549 | | | $ | 1,319 | |
| Other | 10 | | | 9 | | | 9 | |
| Net sales attributable to Siding | 1,689 | | | 1,558 | | | 1,328 | |
| OSB - Structural Solutions | 472 | | | 650 | | | 565 | |
| OSB - Commodity | 347 | | | 514 | | | 446 | |
| Other | 13 | | | 20 | | | 15 | |
| Net sales attributable to OSB | 832 | | | 1,184 | | | 1,026 | |
| Other | 187 | | | 199 | | | 227 | |
| Total Sales | $ | 2,708 | | | $ | 2,941 | | | $ | 2,581 | |
Revenue is recognized when obligations under the terms of a contract (e.g., purchase orders) with our customers are satisfied; generally, this occurs with the transfer of control of our products at a point in time. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods. The shipping cost incurred by us to deliver products to our customers is recorded in cost of sales. The expected costs associated with our warranties continue to be recognized as an expense when the products are sold.
During 2025, 2024, and 2023, our top ten customers accounted for approximately 47%, 49%, and 50% of our sales, respectively, in the aggregate. No individual customer exceeded 10% of our sales in 2025, 2024, or 2023.
Our businesses routinely incur customer program costs to obtain favorable product placement, promote sales of products, and maintain competitive pricing. Customer program costs and incentives, including rebates and promotion and volume allowances, are accounted for as a reduction in net sales at the time the program is initiated and/or the revenue is recognized. The costs include, but are not limited to, volume allowances and rebates, promotional allowances, and cooperative advertising programs. These costs are recorded at the later of the time of sale or the implementation of the program based on management’s best estimates. Estimates are based on historical and projected experience for each type of program or customer. Volume allowances are accrued based on our estimates of customer volume achievement and other factors incorporated into customer agreements, such as new product purchases, store sell-through, merchandising support, and customer training. Management adjusts accruals when circumstances indicate (typically as a result of a change in volume expectations). As of December 31, 2025 and 2024, we accrued $50 million and $48 million, respectively, for customer rebates recorded in accounts payable and accrued liabilities on our Consolidated Balance Sheets.
We ship some of our products to customers’ distribution centers on a consignment basis. We retain title to our products stored at the distribution centers. As our products are removed from the distribution centers by retailers and shipped to retailers’ stores, title passes from us to the retailers. At that time, we invoice the retailers and recognize revenue for these consignment transactions. We do not offer a right of return for products shipped to the retailers’ stores from the distribution centers. The amount of consignment inventory as of December 31, 2025 and 2024, was $18 million and $23 million, respectively.