Wall spray foam insulation in Hinton runs into a limit set decades ago: on a stock where about 70% of the houses predate 1991, the cavity is frequently shallower than a modern wall, and that ceiling on what the wall can hold is fixed before anybody chooses a product.
Find out what the cavity is before anything is specified
Stud depth, whether the sheathing is board or panel, and what is in there now are all established through one small opening and they change the recommendation completely. A specification copied from a newer house does not transfer to a wall that is shallower than the drawing assumes, and quoting one that way produces a number that has to be revised. Five minutes of investigation on a Hinton house is the cheapest part of the whole job.
A shallow wall in a long season is a real constraint
This is where the elevation matters. In a place where winter is a series of events, a wall performing below its ideal is a periodic cost. Where the season is continuous, it is a constant one, so the gap between what a wall could hold and what it does hold is worth more here. That argues for getting the most out of a limited cavity rather than accepting whatever fits, which is a product and application question rather than a thickness one.
Where the vapour control sits matters more in a shallow wall
An older wall here usually has a sheet of poly on the inside face, put there to stop moisture moving out into the cavity. That works when the cavity can dry to the outside during the year. In a shallow wall under a season this long the drying never really happens, so anything that gets past the sheet is held. That is the reason a wall retrofit at this elevation is an assembly decision rather than a material one, and why the answer is not always to fill the cavity with whatever fits.
Finding out which wall is the one, without instruments
There is a test any household can run on a cold morning and it costs nothing. Go around the house and put a hand flat on the inside face of each exterior wall, low down near the floor and again at head height. On a building with an even envelope they feel the same. Where one wall is noticeably colder, or where the bottom of a wall is much colder than the top of it, that is the elevation worth opening and that is the height the problem is at. Doing that before anybody quotes turns a whole house question into a single wall, and in a Hinton winter there is no shortage of mornings cold enough to run it.
Wall Spray Foam Insulation Hinton: Common Questions
How deep is our wall? On this stock, often shallower than a modern one. It gets checked before anything is specified.
Is it worth doing here? More than in a milder place, because the loss is continuous rather than occasional.
How do we know which wall? On a cold morning, hand on each exterior wall low down. The one that is colder is the one.
Size the assembly with the R-value calculator, then get a free Hinton quote. More on Wall Spray Foam Insulation Alberta.