PROFLEX SIM 40 is a 40 mil composite underlayment consisting of a rubberized membrane laminated to a high strength reinforcing fabric on the face and a silicon zed release sheet on the adhesive side. Proflex SIM 40 is designed for full coverage crack suppression. PROFLEX SIM 40 is specially designed to be used under approved thin sets, mortars, and adhesives for interior and exterior applications of ceramic tile, stone, and brick, and for interior applications of wood flooring to eliminate the transmission of cracks through finish flooring. Other applications also may be suitable. To eliminate cracks in finished floor work, the product should be applied to the entire substrate prior to the installation of the finished flooring for crack suppression. Features Easy and fast to install with standard tools Ready for tiling immediately after installation Crack and joint isolation up to 3/8 Crack Suppression Moisture Vapor Protection up to 5 lbs per 1000 sq. ft./24 hr Specifications Weight: 55 lbs
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