Air & Vapour Barriers
Airtightness drives energy performance. Cascade Aqua-Tech supplies air barriers, vapour barriers, weather-resistive barriers (WRBs) and window flashing systems to builders across BC and Alberta, from self-adhered membranes like Henry Blueskin to Swiss Passive House systems from SIGA. We started in 1987 supplying tapes to window manufacturers, so air sealing is in our DNA.
Air & Vapour Barriers we supply
- Self-adhered air barrier membranes (vapour permeable and impermeable)
- Fluid-applied air barriers
- Vapour barriers and smart vapour retarders
- Weather-resistive barriers (WRB) and housewraps
- Window and door flashing membranes and tapes
- Airtightness tapes and accessories for Passive House construction
The right product, matched to the job
- Specialist adviceOur in-house product specialists help you spec by movement, substrate and exposure.
- Multi-line supplyWe carry competing brands, so you get the right system, not the only system.
- Local stockSix branches across BC & Alberta, supplying by the unit, case or pallet since 1987.
Air & Vapour Barriers brands we carry
Availability varies by branch, so call yours to confirm local stock.
3M
Tapes, adhesives & air sealing from a global innovator
Dryvit
EIFS, stucco & continuous insulation systems
DuPont
Tyvek water-resistive and air barriers
Henry
Blueskin® air barriers & waterproofing since 1933
Protecto Wrap
Waterproofing membranes & air sealing systems
Sentry
Breathable weather-resistive barriers
SIGA
Swiss airtightness membranes & tapes
Siplast
PMMA liquid waterproofing & roofing
Soprema
Building envelope membranes & air barriers
Tremco
Sealants, waterproofing & glazing systems
Air & Vapour Barriers FAQs
What is the difference between an air barrier and a vapour barrier?
An air barrier stops uncontrolled air leakage through the assembly; a vapour barrier (or retarder) controls moisture diffusion. Some membranes do both, while vapour-permeable air barriers let assemblies dry outward. We can help you pick the right membrane for your wall assembly and climate zone.
Which air barrier brands does Cascade Aqua-Tech stock?
Henry Blueskin (SA, VP100, VP160), Soprema Sopraseal, Tremco ExoAir, 3M air and vapour barrier products, Protecto Wrap, and SIGA Majvest, Majrex, Wigluv and Rissan for Passive House projects.
Do you carry Passive House air sealing products?
Yes. We supply SIGA membranes and tapes, a leading choice for certified Passive House and high-performance builds in Canada.
Related product categories
Waterproofing
Waterproof membranes, below-grade systems and crystalline waterproofing.
View productsCaulking & Sealants
Silicone, polyurethane & hybrid sealants plus backer rod and accessories.
View productsAdhesives & Tapes
Construction adhesives, specialty glues, VHB and sealing tapes.
View productsEIFS & Stucco
Dryvit EIFS systems, stucco finishes and continuous insulation.
View products