VAPOUR BLOCK

DuROCK Vapour Block is formulated with a co-polymer styrene-butadiene emulsion. It is a trowel applied high performance coating, applied onto non-combustible substrates as an air, vapour, and moisture barrier for PUCCS and InsulROCK Systems. The low water absorption combined with a high flexural strength makes Vapour Block an ideal water penetration barrier for use on exterior wall systems; in particular glass-fibre faced gypsum sheathing, cement board, concrete, or masonry substrates.  As part of an air barrier system for a wall assembly, Vapour Block is compatible with most transition membranes comprised of bituminous SBS with fabric or cross-laminated polyethylene backing, as well as bituminous mastics and polyurethane foam sealants.

Additional Information: DATA SHEET – SDS (ENG)

SPECIAL FINISHES