The Barrett RAM 203 Membrane Protection Course is a multipurpose SBS polymer-modified, fiberglass reinforced asphalt membrane with sanded surfaces, bottom and top. The polymer modification enhances this products elongation, elastic and flexibility properties. The fiberglass reinforcement gives the composite membrane the tensile strength and toughness necessary to accommodate moderate exposures. Barrett RAM 203 Membrane medium-duty membrane is utilized as a protection course in various waterproofing applications, including Barrett's RAM-Tough 250 waterproofing system. RAM 203 is typically installed into the top coating of the waterproofing membrane system. It is compatible with hot or cold applied asphalt bitumens.