The Fire Resist Barritech VP-LT is a fluid-applied membrane formulated for installation in sub-freezing jobsite conditions. The formulation is also fire-retardant, which allows its use in many wall assemblies. It is vapor-permeable - moisture vapor can diffuse directly through the membrane and is applied to exterior wall assemblies where it functions as an air barrier and a water-resistive barrier. Fire Resist Barritech VP-LT can be applied over concrete block, concrete, exterior gypsum sheathing, OSB, plywood and many other common building materials. The product is fully adhered to the substrate, flexible and rubber-like. Fire Resist Barritech VP-LT is a single-component, air-drying product applied by spray or roller at nominal dry film thickness. The high film thickness and flexible, elastic properties enable Fire Resist Barritech VP-LT to bridge cracks and seal around penetrations, which creates a truly continuous, monolithic air and water barrier.