SBS Modified: Modified Bitumen
Modified Bitumen roof systems consist of one, two, or three ply systems. The surface is installed either by torch or hot asphalt, with a base sheet followed by interply sheets, and then a cap sheet. Modified membranes can also be installed in conjunction with built-up roof materials, such as multiple plies of fiberglass felt, to form a hybrid roof system. Modified roof systems exhibit proven performance on residential, commercial, and industrial applications.