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SEGMENT INFORMATION
 6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
SEGMENT INFORMATION SEGMENT INFORMATION
Effective January 1, 2025, due to a strategic shift in how we manage our business as a result of the GR Agreement, we are presenting the GR business as a discontinued operation. We reorganized our reportable segments to align to our new operating and management structure. As a result, all prior period information was recast to reflect this change. The Company now has three reportable segments: Roofing, Insulation and Doors. The Company's vertically integrated glass non-wovens business that supports the Company’s Roofing business and other building products customers, along with its structural lumber business, were integrated into the Roofing business segment. Two glass melting plants, which make fiber for the non-wovens business, were integrated into the Insulation segment. Unless otherwise specified, the information in the note refers to only the continuing operations of the Company.
Operating segments are aggregated into reportable segments based on consideration of the following factors: similarity of economic characteristics, the nature of business activities, the management structure directly accountable to our chief operating decision maker ("CODM") for operating and administrative activities, availability of discrete financial information and information presented to the Board of Directors and investors. Accounting policies for the segments are the same as those for the Company. The Company’s three reportable segments are defined as follows:
Roofing – Within our Roofing segment, the Company manufactures and sells residential roofing shingles, oxidized asphalt materials, roofing components and composite lumber primarily used in residential construction. Roofing also manufactures and sells glass mat and specialty veil materials used in building and construction applications.
Insulation – Within our Insulation segment, the Company manufactures and sells thermal and acoustical batts, loose fill insulation, spray foam insulation, wet used chopped strand, foam sheathing and accessories. It also manufactures and sells glass fiber pipe insulation, energy efficient flexible duct media, bonded and granulated stone wool insulation, cellular glass insulation, and foam insulation used in above- and below-grade construction applications.
Doors – Within our Doors segment, the Company manufactures and sells interior and exterior doors and door systems primarily used in residential construction.
NET SALES
The following tables show a disaggregation of our Net sales by segment and geographic region. Corporate eliminations (shown below) largely reflect intercompany sales from Insulation to Roofing. External customer sales are attributed to geographic region based upon the location from which the product is sold to the external customer.
Three Months Ended June 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,128 $346 $489 $1,963 $(40)$1,923 
North America Non-Residential118 373 — 491 (3)488 
Total North America1,246 719 489 2,454 (43)2,411 
Europe55 180 58 293 (1)292 
Asia-Pacific2 31 3 36 — 36 
Rest of world— 4 4 8 — 8 
NET SALES$1,303 $934 $554 $2,791 $(44)$2,747 
Three Months Ended June 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$1,088 $383 $277 $1,748 $(37)$1,711 
North America Non-Residential112 367 — 479 (3)476 
Total North America1,200 750 277 2,227 (40)2,187 
Europe49 184 30 263 — 263 
Asia-Pacific3 37 1 41 — 41 
Rest of world— 3 3 6 — 6 
NET SALES$1,252 $974 $311 $2,537 $(40)$2,497 
Six Months Ended June 30, 2025
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$2,096 $728 $968 $3,792 $(75)$3,717 
North America Non-Residential218 705 — 923 (5)918 
Total North America2,314 1,433 968 4,715 (80)4,635 
Europe103 346 114 563 (3)560 
Asia-Pacific6 56 3 65 — 65 
Rest of world— 8 9 17 — 17 
NET SALES$2,423 $1,843 $1,094 $5,360 $(83)$5,277 
Six Months Ended June 30, 2024
(In millions)RoofingInsulationDoorsSubtotalEliminationsConsolidated
Disaggregation Categories
North America Residential$2,048 $781 $277 $3,106 $(70)$3,036 
North America Non-Residential198 718 — 916 (7)909 
Total North America2,246 1,499 277 4,022 (77)3,945 
Europe98 359 30 487 (1)486 
Asia-Pacific6 65 1 72 — 72 
Rest of world— 8 3 11 — 11 
NET SALES$2,350 $1,931 $311 $4,592 $(78)$4,514 
EARNINGS BEFORE INTEREST, TAXES, DEPRECIATION AND AMORTIZATION
Effective January 1, 2025, we changed our segment measure of profitability for our reportable segments from Earnings before interest and taxes ("EBIT") to Earnings before interest, taxes, depreciation and amortization (“EBITDA”), as the measure used for purposes of making decisions about allocating resources to the segments and assessing performance. Segment EBITDA is the principal measure used by the CODM to assess segment performance and make decisions on the allocation of resources. Prior period amounts have been recast to reflect the new segment measure for profitability.
The Company identifies the Chief Executive Officer as the CODM. In applying the criteria set forth in the standards for reporting information about segments in financial statements, we have determined that we have three reportable segments – Roofing, Insulation, and Doors. The key factors used to identify these reportable segments are the organization and alignment of our internal operations and the nature of our products. The CODM uses EBITDA for each reportable segment to assess segment performance and make decisions on the allocation of resources. Segment EBITDA targets are established on an annual basis and used by the CODM throughout the year to compare with actual results. Quarterly forecasts supplement annual targets and provide incremental information utilized to assess the performance of a segment. Segment EBITDA variance analysis further provides insight into segment operational cost optimization.
The Company does not regularly provide significant segment expense detail to the CODM. EBITDA by segment consists of net sales less related costs and expenses, which are mainly comprised of cost of sales and marketing and administrative costs. EBITDA is presented on a basis that is used internally for evaluating segment performance. Certain items, such as general corporate expenses or income and certain other expense or income items, are excluded from the internal evaluation of segment performance. Accordingly, these items are not reflected in EBITDA for our reportable segments and are included within Corporate, Other and Eliminations.
The following table summarizes EBITDA by segment:

Three Months Ended June 30,Six Months Ended
June 30,
(In millions)
2025202420252024
Reportable Segments
Roofing$457 $437 $789 $775 
Insulation225 246 450 469 
Doors75 61 143 61 
Total reportable segments757 744 1,382 1,305 
Restructuring excluding depreciation(9)(34)(12)(44)
Gains on sale of certain precious metals12 — 21 — 
Paroc marine recall(1)(6)(2)(7)
Strategic review-related charges— (15)— (17)
Acquisition-related transaction costs— (29)— (47)
Loss on Assets Held for Sale(24)— (26)— 
Acquisition-related integration costs excluding amortization (4)(21)(6)(21)
Recognition of acquisition inventory fair value step-up— (12)— (12)
General corporate expense and other(54)(66)(114)(112)
Total corporate, other and eliminations(80)(183)(139)(260)
Depreciation and amortization(172)(142)(331)(250)
Interest expense, net(63)(63)(127)(79)
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES$442 $356 $785 $716 
TOTAL ASSETS AND PROPERTY, PLANT AND EQUIPMENT
The following table summarizes total assets by segment:
(In millions)June 30, 2025December 31, 2024
Assets allocated to reportable segments
Roofing$3,643 $3,107 
Insulation4,514 4,231 
Doors4,433 4,454 
Total assets allocated to reportable segments12,590 11,792 
Assets not allocated to reportable segments
Cash and cash equivalents230 321 
Non-current deferred income taxes8 8 
Investments in affiliates60 86 
Corporate property, plant and equipment, other assets and eliminations921 862 
TOTAL ASSETS FROM CONTINUING OPERATIONS$13,809 $13,069 
The following table summarizes total property, plant and equipment, net by geographic region:
(In millions)June 30, 2025December 31, 2024
North America$3,247 $3,182 
Europe599 524 
Asia Pacific64 67 
Rest of world42 45 
PROPERTY, PLANT AND EQUIPMENT, NET FROM CONTINUING OPERATIONS$3,952 $3,818 
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT
The following table summarizes cash paid for property, plant and equipment by segment:
 Three Months Ended June 30,Six Months Ended
June 30,
(In millions)2025202420252024
Reportable Segments
Roofing$66 51$128 $105 
Insulation80 55161 116 
Doors23 1541 15 
Total reportable segments$169 $121 $330 $236 
General corporate additions7 1128 29 
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT FROM CONTINUING OPERATIONS
$176 $132 $358 $265