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.
Happy Valley Roofing & Siding, LLC. provides residential roofing and siding services. We specialize in asphalt shingles, metal roofs, and rubber roofs on new and existing homes. Give your home's exterior appearance a facelift with our professional services.