Calgary asks two different things of a spray foam job depending on what's being insulated. A house in an older SW or NE quadrant needs the chinook-driven freeze-thaw problem solved at the attic, rim joist and basement. A metal-clad shop or warehouse in Foothills, Manchester or Shepard Industrial needs the condensation-on-steel problem solved at the roof deck and wall panels. Same material, two very different jobs - and this city has a lot of both.
Spray Foam Insulation Calgary For Every Building Type
- Homes - about half of Calgary's housing predates 1991, concentrated in the inner city and established quadrants; that stock leaks at rim joists, basements and additions. See residential spray foam in Calgary and attic spray foam in Calgary.
- Commercial and industrial - warehouses, metal buildings and retrofits across Calgary's industrial parks. See commercial spray foam in Calgary.
- Farms, shops and acreages on the city's edges - see agricultural spray foam and shop spray foam province-wide.
Closed Cell vs Open Cell Spray Foam Insulation Calgary
Below-grade, exterior and anything exposed to the chinook-driven moisture swings here calls for closed-cell - it resists water and becomes a vapour barrier at about two inches. Open-cell is the lower-cost choice for interior walls and sound control where moisture isn't a factor. Most real jobs here end up using both, matched room by room.
Spray Foam Insulation Calgary Cost: What A Quote Includes
Every foam job is priced by the board foot, not a flat rate - see what drives cost in Calgary and estimate your own project.
Three eras of Calgary housing, three different jobs
Calgary's housing splits into three broad vintages and each one fails differently. The inner communities built before the seventies have uninsulated or barely insulated rim joists, balloon-framed walls in places, and attics that have been topped up rather than sealed. The large middle band from the seventies through the nineties has batts everywhere and almost no deliberate air barrier, so the insulation is being bypassed rather than used. The newest suburbs are tighter but bring their own pattern: bonus rooms over garages, cantilevered floors and complex rooflines with more junctions to get wrong. Knowing which of the three a house belongs to answers most of the question before anyone walks in, and it is why a quote on a Calgary house should follow a look at the actual assemblies rather than a square-foot number over the phone. The chinook cycling that this city is known for compounds all three, because the envelope crosses the dew point far more often here than in a steadier climate.
What tends to get missed on a quote
Three assemblies are left off more often than any others, and all three are places where the envelope is interrupted rather than simply thin. The band where the floor structure lands on the foundation is the first, and it is usually the largest single air path in the building. The junction where an addition meets the original house is the second, because the insulation in each rarely runs continuously into the other. The third is the assembly between an attached garage and any room above or beside it. None of them is a large area and all three are worth confirming are in the scope before comparing one price with another.
Spray Foam Insulation Calgary: Common Questions
Which Calgary houses benefit most from spray foam? It depends on the era. About 52 percent of local homes predate 1991, and in those the rim joist and ceiling plane leak; in newer ones the cold spot is nearly always a bonus room over a garage.
Do chinooks really affect insulation? They affect the air seal. Each freeze-thaw swing drives pressure and moisture through unsealed penetrations, which is why foam that seals as it insulates suits this city.
Do I still need a poly vapour barrier? Closed cell becomes a vapour retarder at about 38 mm under Alberta section 9.25, so the assembly generally no longer needs a separate polyethylene sheet.
Get a free Calgary quote - or see spray foam insulation across all of Alberta.