PROSOCO R-Guard Cat 5™ ICF is a fluid applied, waterproofing, and air and water barrier membrane that combines the best of silicone and polyurethane properties. This single component, Silyl-Terminated-Polymer (STP) produces a highly durable, seamless, elastomeric weatherproofing membrane. Cat 5™ ICF is specifically designed for use on insulated concrete forms, but is appropriate for use on exterior sheathing, CMU back-up walls, and precast concrete. Cat 5™ ICF also meets the unique requirements of pressure-equalized rain screen construction for use on exterior sheathing behind open-jointed or vented rain screen cladding.

Cat 5™ ICF is proven to prevent water and air penetration of the building envelope in conditions ranging from everyday weather to the drenching rains and 155 mph winds of a Category 5 hurricane. Cat 5™ ICF can be applied in unfavorable weather conditions to dry or damp substrates. This feature eliminates many weather-related construction delays and accelerates the “drying in” of new buildings. The durable, elastomeric membrane adheres to most surfaces, is immediately waterproof and is compatible with most sealants and waterproofing or air barrier components.