Stop by any of our 3 locations in chelsea saline or bridgewater today to see how we can help. Dura foam roofing and solar installers replace tar gravel single ply and other flat roof systems with a super insulated cool roof system. Commercial Roofing Urethane Usa Insulation Coatings Topglass gc is a recent development in the topglass natural lighting family of products and uses an innovative manufacturing process developed by alsynite nz ltd whereby gel coat is applied to the weather surface of the sheeting.