Barriseal-R is a water-based asphalt emulsion modified with a blend of synthetic polymers and special additives. It is formulated to a thick consistency, so it will hang easily on vertical surfaces at high thickness and can also be used as the principle membrane, and by itself performs as an air barrier, vapor barrier and waterproof membrane. It is often used as an accessory product in the Barriseal-S spray-applied air & vapor barrier system. Barriseal-R is applied by roller or brush, to achieve a nominal dry film thickness and can be applied over concrete block, concrete, exterior gypsum sheathing, foam insulation board, plywood, OSB and many other common building materials. The product is fully adhered to the substrate, flexible and rubber-like. The high film thickness and flexible, elastic properties enable Barriseal-R to bridge cracks and seal around penetrations, which creates a truly continuous, monolithic air, vapor and water barrier.