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 siliconized 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 thinsets, 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.
Fast and easy peel and stick installation with standard tools
Ready for finish flooring immediately after installation
Protects finish flooring from cracking due to in plane substrate movement
Moisture vapor protection
Prepare floor first using PROFLEX® PR11 primer Lowes item number 757173 796491