QXO, Inc. distributes roofing, waterproofing and complementary building products in the United States and Canada. It offers roofing and siding materials for residential construction, such as asphalt shingles, metal roofing, wood roofing, tile roofing, slate roofing, roofing accessories, and roofing insulation; and siding materials, including vinyl siding aluminum siding, steel siding, fiber cement siding, wood and composite siding, trim and accessories, and gutters and accessories. The company also provides commercial roofing and siding products built-up roofing, modified roofing, EPDM roofing, PVC roofing, low-slope metal roofing TPO roofing, and commercial accessories; commercial waterproofing, concrete restoration and parking, public works, DOT and industrial, fire protection, wall systems, and safety and tools, as well as glass, glazing, and fenestration. In addition, it offers building materials; exterior and interior materials; and tools and equipment. The company provides its products under Atlas, Carlisle, CertainTeed, Elevate, Exterior Portfolio, GAF, IKO, James Hardie, LP SmartSide, Owens Corning, Royal, Tamko, TRI-BUILT, and Velux brands. It serves professional contractors, home builders, building owners, lumberyards, and retailers. The company was formerly known as SilverSun Technologies, Inc. and changed its name to QXO, Inc. in June 2024. QXO, Inc. is headquartered in Greenwich, Connecticut.