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Roofing Suppliers in O'Fallon, Missouri

Roofing distributors and supply houses with a branch in O'Fallon, Missouri.

QXO
The building-products distribution arm of QXO, Inc., which acquired Beacon Roofing Supply in April 2025 and rebranded it. QXO is headquartered in Greenwich, Connecticut and states that it has 1,150 locations across all 50 U.S. states and seven Canadian provinces.