Windows & skylights

Full-service general contractor serving Centre, Blair, Huntingdon and Mifflin counties. Specializing in remodeling, especially for kitchens and bathrooms. 47 years experience. Expert advice and design

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.