ThermoSoft Moisture Barrier 40 ft. x 2.5 ft. x 6 mil (.006 in.) with Self-Adhesive Edge for Installation with WarmFilmThis 6 mil polyethylene moisture barrier is ideal for installation on cement slab subfloors to protect all brands of floating laminate, wood and engineered wood floors from moisture that may be present in the slab. 6 mil (. 006 in.) low density polyethylene film 2. 5 ft. x 40 ft. Use above WarmFilm radiant floor heating mats to protect WamFilm from moisture or spills that might penetrate down from the finshed floor Self sealing edge simplifies