Fosroc Proofex Engage comprises a blended polyethylene/polypropylene membrane with a cell mesh bonded to one face. When concrete is poured onto the membrane, it flows into the cell mesh and locks permanently to the membrane — creating a fully bonded, anti-tracking system that cannot delaminate or allow water to migrate laterally between the membrane and the structure, even in the event of ground settlement. The membrane is supplied with a self-adhesive selvedge along one edge to provide sealed laps, and requires no primer or protection board. Blinding concrete may be eliminated, simplifying the construction sequence. The product is inert and will not react with ponded water prior to the concrete pour. For cold weather working below +5°C, additional measures are required — contact Fosroc for guidance. Once exposed, the membrane should not be left unprotected for more than 6 to 8 weeks in high temperature or high humidity conditions. Benefits Unique cell mesh system, concrete interlocks to form a permanent mechanical bond Anti-tracking design, prevents lateral water migration between membrane and structure No primer or protection board required, blinding concrete may be eliminated Inert, no reaction risk with ponded water prior to concrete pour Watertight at 6m head Root resistant Good to know Waterproofing to BS 8102:2009 Grades 1, 2 and 3 Type A (Barrier) waterproofing protection BBA Certificate No. 03/4042 Methane and CO2 protection to BRE Report 212 Radon protection to BRE Report 211 Crack bridging up to 5mm (100 cycles) ASTM C1305 modified Store flat, cool and dry, away from sunlight
