OptiMax membranes are fiberglass-reinforced asphalt-based membranes modified with a specially-designed polyurethane resin to extend roof longevity. OptiMax membranes combine two of the most effective waterproofing materials on the market - polyurethane and asphalt - in a patented process with active modification involving chemically locking the urethane modifier to the asphalt, providing enhanced performance characteristics. This long-lasting, puncture, and fatigue-resistant membrane is designed to be the waterproofing and reinforcement layer in a modified bitumen roofing system. OptiMax membranes are designed as the top component in a roofing system where superior performance is required. OptiMax can be used with Garland-modified base sheets, depending on the adhesive used. Specifications are available for either hot- or cold-applied two-ply systems. In addition, OptiMax membranes can be used as the top ply in a two-ply flashing system. They can also repair splits, cracks, and other deteriorated areas in existing asphalt-based roofing systems.
