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Roofing Suppliers in Dover, Delaware
Roofing distributors and supply houses with a branch in Dover, Delaware.
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.
S. G. Williams & Bros. Co.
Roofing and siding supply company started in Wilmington, Delaware, in 1909, which describes itself as an independent, family-owned local business now in its fourth generation. It runs three stores in Delaware, in Wilmington, Newark (trading there as Newark Wholesale) and Dover, and says it serves Delaware, Maryland, Pennsylvania and New Jersey. Its published product list covers asphalt shingles, roofing felt, metal roofing, cedar shingles and shakes, synthetic shingles, drip edge, ridge vents, flashing, gutters, vinyl and aluminum siding, soffit, insulation, skylights and vinyl replacement windows. The contact page prints no ZIP codes and no store hours.