Only about 18 percent of Airdrie homes were built before 1991, which makes this one of the newest housing stocks in the province. Wall spray foam insulation in Airdrie is therefore rarely the classic retrofit job. It is either a decision made while a house is being framed, or it is a question about a specific wall in a fairly recent house that is not performing the way the owner expected.
On attached housing, the party wall is not the problem
Airdrie has a large share of duplexes, townhouses and narrow-lot homes, and the wall people ask about first is usually the one they share with a neighbour. That wall is a fire and sound assembly, and it separates two heated spaces, so it is doing almost no thermal work. Insulating it changes very little on a heating bill. The walls that are costing an attached home are the exposed end wall, the front and back elevations, and any wall facing an unheated garage. Saying that plainly costs us the easy sale and saves the homeowner from paying for the wrong wall.
The narrow lot removes an option
On a zero-lot-line or laned house there is often no practical room to add exterior insulation and re-clad, because the working space beside the building is not there. That takes the one method that interrupts thermal bridging off the table for those houses, and leaves cavity work as the realistic path. It is a geometry problem rather than a product problem, and it is worth knowing before anyone plans an upgrade that cannot physically be installed.
What the framing stage is worth
In a city where houses are still going up in quantity, the open cavity is genuinely available rather than theoretical. A wall assembly is inexpensive to get right exactly once, while nothing has to be removed and there is no access problem at all. The incremental cost of a better assembly at framing is a fraction of the same performance bought later as a retrofit, which is why we would rather talk to somebody building than to the same person in five years.
Nominal against effective, in a new house
A batt marked R-14 gives that through the batt and much less through the studs beside it, because wood conducts heat far better than insulation does. A house built to the minimum of its day can still perform below what its owner assumed, and the rooms where that shows up first in newer Airdrie houses are the bonus room over the garage and anything on the garage wall. Those assemblies face an unheated space, get built to a lower standard for that reason, and are worth specifying properly rather than discovering later.
A closed wall stays closed
Foam bonds to the substrate it is sprayed onto, so the cavity has to be open. A finished wall cannot be sprayed, and where nothing is being opened the money belongs in the attic, the rim joist and the crawl space instead. Those are reachable now, generally leak more air than the walls, and cost less to correct.
Wall Spray Foam Insulation Airdrie: Common Questions
Should we insulate the wall we share with the neighbours? For heat, no, it separates two warm spaces. For sound it is a different conversation and a different assembly.
Our bonus room is always cold - is that the walls? Usually a combination of the walls onto the garage, the floor over it and the air leakage between the two. That room is where a garage-facing assembly shows itself.
Can this be done without opening the house up? Only from outside, and only where there is room to work. On a narrow lot that is often not available.
Estimate board feet, then get a free Airdrie quote. More on Wall Spray Foam Insulation Alberta province-wide.
After the foam: the interior finish
Once the foam is in and trimmed, the assembly needs its interior finish, and on an occupied space that finish is also the code-required thermal barrier over the foam. We work alongside drywall finishing in Airdrie, an independent drywall contractor, so the two stages are not left to collide on site.