Bakor Non-Permeable Air and Vapour Barriers

Bakor non-permeable air and vapour barriers perform the function of air barrier, vapour barrier and rainwater barrier all in one product. These products essentially help create an environmental separation within the Building Envelope between the exterior climatic condition and the interior building conditions.

Since these membranes can perform as the vapour barrier, their position within the wall assembly is critical in avoiding potential condensation problems. Regions are typically separated into two climate categories: Cold Climate or Hot and Humid Climate. The American Society for Heating, Refrigeration and Air Conditioning identifies cold climate regions as being Canada and all US states excluding south Texas, Louisiana, Mississippi, Alabama, Georgia, and Florida, which are considered hot and humid climates.

Typically, in cold regions, the non-permeable air and vapour barriers are positioned on the outside of the interior wythe but still on the warm-in-winter side of the primary insulation. In hot and humid climates, the positioning could be reversed such that the insulation is installed on the inside of the membrane. Refer to our graphics below for an illustration of a typical wall assembly.

Air and Vapour Barriers for Cold Climates

Air-Bloc 06, Air-Bloc 21, Air-Bloc 21FR and Air-Bloc 32 are elastomeric air and vapour barrier systems that remain resistant to rainwater penetration. Unlike a dampproofing product, Air-Bloc 06, Air-Bloc 21, Air-Bloc 21FR and Air-Bloc 32 are self-sealing and will remain flexible.

Air-Bloc 06 is ideal for cold weather application. Air-Bloc 21 also functions as an insulation adhesive for securing the insulation within the cavity wall. Air-Bloc 21FR is fire-resistive. Air-Bloc 32 is ideal for projects that require a low VOC, low odour system. Blueskin^® is used as a transition membrane to span gaps between dissimilar surfaces in key areas such as wall-to-window frames, wall-to-slab, wall-to-roof junction, etc. For more help in choosing the appropriate air barrier for your project please contact our technical services department at 1-800-387-9598.

Air and Vapour Barriers for Hot, Humid Climates

Air-Bloc 32 or Blueskin^® SA are applied to the "warm" side of the wall, to provide an air and vapour barrier in warm climates.

Air-Bloc 32 is ideal for projects that require a low VOC, low odour membrane.

Blueskin^® SA is an easy-to-install self-adhered (peel-and-stick) membrane. For more help in choosing the appropriate air barrier for your project please contact our technical services department at 1-800-387-9598.

Air-Bloc 32
Elastomeric Air and Vapour Barrier

Air-Bloc 32 is a one-component, liquid applied, elastomeric membrane designed to provide an air and vapour barrier when applied to construction surfaces. Cures to a tough monolithic rubber-like membrane, which resists air leakage. Meets CAN/CGSB-51-33 Type I Water Vapour Permeance requirements.

Air-Bloc 32 can be trowel or spray applied.

Choose Air-Bloc 32 for a more environmentally-friendly choice. It is excellent for use in projects requiring low VOC or low odour applications.

Blueskin^® SA
Self-Adhered Air and Vapour Barrier

Blueskin^® SA is a self-adhering membrane consisting of an SBS rubberized asphalt compound, which is integrally laminated to a blue polyethylene film. The membrane is specifically designed to be self-adhered to a prepared substrate, providing an air/vapour/rain barrier.