You cannot write one wall specification for a Raymond house. With about 66% of homes here built before 1991 and most of them extended at least once across a wide lot, a single address will have three or four genuinely different wall assemblies in it, built decades apart to different standards, and they want different work. Wall spray foam insulation in Raymond starts with establishing which wall is which, because scoping all of them as one is how money gets spent in the wrong place.
Four walls, one house
The original core is likely framed in true-dimension lumber at whatever spacing the carpenter preferred, sheathed in boards laid diagonally or horizontally, with building paper and the original cladding. The cavity depth is not a nominal size and the bays are not a consistent width. The first addition is probably nominal two-by-four at sixteen inch centres with plywood or fibreboard sheathing and whatever insulation was being sold that year. A later addition may be two-by-six, which is a genuinely different cavity. And then there is the fourth one: the wall that used to be the outside of the house and now stands in the middle of it, still carrying its sheathing, its paper and often its siding, with a window frame in it somewhere.
The buried wall is the one that matters
It is worth being blunt about this because it inverts the usual priority. The wall standing in the middle of the house is not insulating anything, and it is actively working against you, because it is open to the attic above and to the crawl space or basement below. Warm air enters at the bottom, rises through the old cavity, and leaves into the roof space. It is a chimney inside your house and it operates continuously. Sealing it at the top and the bottom is cheap, is reachable from the attic and the crawl without touching any finished surface, and will do more for comfort than insulating a good exterior wall would. On most of these houses it is the first wall-related job and it is not a wall insulation job at all.
Three ways into an exterior wall, honestly compared
From the outside, during a cladding replacement. The sheathing comes off or holes are made, the wall is sprayed, and the new siding goes on over it. This is by far the best version: the whole cavity is visible, the framing gets inspected, and nothing inside the house is touched. From the inside, during a renovation, when the drywall or plaster is coming off anyway for other reasons. Also good, for the same reasons, and disruptive if it is being done solely for insulation. Or through holes, which with sprayed foam means a line of openings and no ability to see whether the cavity actually filled behind the sheathing, past the fire blocking, past the old wiring and around whatever is already in there. On irregular old framing we are cautious about that third route and we will tell you where it is and is not reasonable.
What might already be in the cavity
On this stock, almost anything. Nothing at all. Shavings or sawdust that has settled to the bottom third. Old batts that have slumped. Blown-in material from a 1980s program, which may be fine. There may be fire blocking at mid-height dividing each bay in two. There may be old wiring that cannot be buried. Knowing which of those you have changes the method and sometimes rules out one of the three routes above, which is why the inspection matters more here than the quote does.
Walls are not the first job, and that is worth money
The sequence that returns the most on a house like this is: water problems, then the air paths at the top and bottom including the buried wall and the rim joists, then the crawl spaces and basement walls, then the attic pockets. Exterior walls come after all of that, and they come best when the siding is being replaced for its own reasons. Anybody who leads with the walls on a house of this age is quoting the most expensive item first.
Moisture, and the thing to be careful about
An old wall assembly was built to dry outward, and it has survived by doing so. Filling the cavity completely with a low-permeability product changes how that wall manages moisture, and on a wall with limited drainage behind the cladding that deserves thought rather than a default. This is a real consideration and it is one of the reasons we prefer to do walls when the cladding is off, because then the drainage and the water management can be put right at the same time.
One company, start to finish
Wall spray foam insulation Raymond gets handled by us from the walk-through onward. We quote and manage it, and our own installers apply the foam.
Wall Spray Foam Insulation Raymond: Common Questions
Why is there a wall in the middle of my house with siding on it? Because it used to be the outside wall. It is now a vertical air path from your crawl space to your attic, and sealing it is the highest value wall job you have.
Can walls be done without taking anything off? Through holes, with limited ability to confirm the fill. On irregular old framing we would rather do it when the cladding or the interior is off.
Do all the walls get the same treatment? No. The assemblies are different ages and different depths. The scope is per wall, and one of them is not an insulation job at all.
How much does wall spray foam insulation cost in Raymond? By sprayed area and thickness, but the dominant cost is access. The same wall is a very different number with the siding off versus drilled from outside.
How do I choose a wall spray foam contractor in Raymond? Ask what they expect to find in each wall and how they will confirm the cavity filled. Confidence without a way to verify is the thing to be wary of.
Size the assembly with the R-value calculator, then get a free Raymond quote. More on Wall Spray Foam Insulation Alberta province-wide.