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Barritech NP-LT is a fluid-applied membranes of fire-retardant synthetic polymer composition. This product allows for installation below freezing temperatures to enable work to continue during winter. Barritech NP-LT is applied to exterior wall assemblies where it functions as an air barrier, vapor barrier and water resistive barrier. Barritech NP-LT can be applied over concrete block, concrete, exterior gypsum sheathing, plywood, OSB and many other common building materials. The product is fully adhered to the substrate, flexible and rubber-like. Barritech NP-LT is a single component, air-drying product applied by spray or roller at nominal 40 mils dry film thickness. The high film thickness and flexible, elastic properties enable Barritech NP-LT to bridge cracks and seal around penetrations which creates a truly continuous, monolithic air, vapor, and water barrier.