Barrier Coats The Finest Quality EIFS Products in the Industry.

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 DuROCK 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. Check with DuROCK for use on other 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. Refer to DuROCK system specifications for product specific guidelines.

Roller Bear


Roller Bear is intended for use as the first coat in a two-coat moisture barrier system that serves as the second plane of protection behind DuROCK PUCCS EIFS. Roller Bear is a factory-blended, ready-to-use, non- cementitious, polymeric coating that is supplied in 19 L (5 US gallon), 28 kg (62 lb) pails and is applied by spray, brush, or roller in a continuous layer to achieve a minimum dry thickness of 0.28 mm (11 mils) per coat.

Polar Bear


DuROCK Polar Bear is formulated with a 100% acrylic emulsion. It is a trowel-applied high performance coating for use over wood substrates as both an air and moisture barrier, in particular for the DuROCK PUCCS RMC-1 and InsulROCK RMC-1 Systems. Polar Bear contains fibers that enhance the cohesive and tensile strength for added durability. Polar Bear can also be used as an insulation adhesive. The low water absorption combined with a high flexural strength makes Polar Bear an ideal water penetration barrier for use on exterior wall systems; in particular plywood 12.7 mm (½ inch) thick and oriented strand board (OSB), minimum 11.1 mm (7/16 inch) thick. Check with DuROCK for use on other substrates. As part of an air barrier system for a wall assembly, Polar Bear 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. Refer to DuROCK system specifications for product specific guidelines.

Cement Bear


DuROCK Cement Bear is formulated with a 100% acrylic emulsion that is field-mixed with Portland Cement. It is a trowel-applied high performance coating for use on non-combustible substrates, as an air and moisture barrier for DuROCK PUCCS and InsulROCK Systems. Cement Bear contains fibres that enhance the cohesive and tensile strength for added durability. Cement Bear can also be used as an insulation adhesive. The low water absorption combined with a high flexural strength makes Cement Bear an ideal water penetration barrier for use on exterior wall systems; in particular glass-fibre faced gypsum sheathing, cement board, concrete or masonry substrates. Check with DuROCK for use on other substrates. As part of an air barrier system for a wall assembly, Cement Bear 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. Refer to DuROCK system specifications for product specific guidelines.