For over three decades Certified has established a reputation as Central PA’s Leading Window, Siding and Door Distributor. A reputation built on a solid foundation of quality products, product expertise, dependable delivery, competitive pricing, and a dedication to serving our customers.
Certified prides itself on being Central PA’s premier source for windows, siding, entry and garage doors.
Quality Roofing Supply is a distributor of residential roofing, commercial roofing and exterior building materials through our 15 locations throughout Delaware, New Jersey and Pennsylvania. We have one of the largest inventories of roofing shingles, metal roofing, slate roofing, commercial roofing, siding, windows, doors, decking, railing, waterproofing and accessories in the entire country.