TPO SBS Membrane Roofing Products that work well for your flat roof. These are all from GAF, a very reliable product.
RUBEROID® 20 MEMBRANE: Tough, resilient, fiberglass-based modified bitumen base/ply sheet manufactured to stringent GAF specifications.
RUBEROID® MOP SMOOTH 1.5 MEMBRANE: Tough, resilient, polyester-based modified bitumen base/ply sheet manufactured to stringent GAF specifications.
RUBEROID® SBS DUAL SMOOTH MEMBRANE: Premium, heavy duty, polyester/fiberglass-based modified bitumen base/ply sheet manufactured to stringent GAF specifications.
RUBEROID® MOP PLUS SMOOTH MEMBRANE: Premium, heavy duty, modified bitumen membrane manufactured to stringent GAF Corporation specifications.