K-I Lumber and Building Materials distribute GAF and CertainTeed shingles from our five locations. These manufacturers are leaders in the Building Materials Industry. In fact, GAF has served the roofing industry since 1886 and CertainTeed for 100 years. Customers are choosing higher end shingles because of length of warranty and curb appeal these shingles offer. Both GAF and CertainTeed have a broad selection of styles and colors to choose from. We do offer other manufacturers and are available on a special order basis.