The Barrett RAM 306 is a multi-purpose SBS polymer-modified, polyester reinforced modified bitumen membrane with a ceramic granule surface. The polymer modification enhances this products elongation, elastic and flexibility properties. The high strength polyester reinforcement gives the composite membrane best tensile strength, toughness, puncture and tear resistance necessary to accommodate typical rooftop exposures. RAM 306 comes with black or white granule surfacing. Both offer resistance to ultra-violet rays and damage caused by foot traffic. The light colored granules provide improved reflectivity. This heavy-duty membrane is utilized as a built-up roof and base flashing cap sheet. RAM 306 is also used as a waterproofing membrane protection course. RAM 306 can be installed in hot asphalt bitumen or approved cold applied adhesives and mastics.