FORPAC FP-40 is a 40 mil composite underlayment consisting of a rubberized membrane laminated to a high strength reinforcing fabric on the face and a release sheet on the adhesive side. FP-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.
Easy and fast to install with standard tools
Ready for tiling immediately after installation
Crack and joint isolation up to 3/8"
Moisture vapor protection up to 5#/1000 sf/24 hr CaCI test (see installation instructions)