The group's principal activity is to manufacture a broad line of asphalt and polymer based roofing products and accessories for the residential and commercial roofing markets. The group also manufactures specialty building products and accessories for the professional and do-it-yourself remodeling and residential construction industries. The group's operations are conducted through three business segments: residential roofing, commercial roofing and specialty building products. Residential roofing segment offers timberline(R) series and the sovereign(R) series. Commercial roofing segment provides a full line of modified bitumen and asphalt built-up roofing products, thermoplastic polyolefin products, liquid applied membrane systems and roofing accessories for use in the application of commercial roofing systems.