Crawl space spray foam insulation in Leduc turns up in two places: under the quickest of the boom-era houses, and under additions built onto houses of every vintage since. In both cases what is below the floor was never intended to be part of a heated building.
Speed is why some of these houses have no basement
A house built at pace for an arriving workforce did not always get a full excavation. A shallow void was quicker, cheaper and adequate for what the building was expected to be, and a number of those houses are still standing and still occupied. The void underneath is typically low, of block or early concrete, sometimes with a floor that is part slab and part bare ground, and no two of them are quite the same.
The addition is the other half of this market
Family rooms, back extensions and converted porches added to houses here through the following decades were frequently built over a shallow crawl space rather than a full basement, because that was the cheap and quick way to do it. That is why one room in an otherwise comfortable Leduc house has a cold floor and nothing else does, and why the fix is under that room rather than anywhere in the main house.
If radon is a question, it is settled with the ground cover or not at all
A crawl space is the one part of a house where the soil is effectively indoors, so it is where soil gas arrives if it is going to. This is worth raising in Leduc because the work described here and a radon remedy share the same layer: a sealed, lapped ground cover run up the walls. Sprayed foam is not a radon system and should never be sold as one. What matters is the sequencing. If a house has tested high, or the owner intends to test, the membrane goes down with the depressurisation point and the pipe route already decided, because putting them in afterwards means cutting the layer that was just sealed. If radon is not a concern the same cover still goes down, for moisture. Either way it is the first thing that happens and the last thing that should be improvised.
The ground goes first, then the perimeter
Bare earth releases moisture continuously, so sealing a crawl space without covering the ground trades a cold space for a damp one. A sealed barrier goes down first, then the perimeter walls, and then the space is inside the building rather than outside it. Doing those in the wrong order is the most common way this job goes wrong, and the sequence is worth insisting on even when only part of the budget is available this year.
Crawl Space Spray Foam Insulation Leduc: Common Questions
Why does one room have cold floors when the rest of the house is fine? That room is usually over an addition built on a crawl space rather than over the basement.
Is insulation already between the joists enough? With cold air moving below it, it does very little, and against a damp floor structure it can do harm.
Do we need a ground cover if we are sealing it? Yes, and it goes first. Sealing over bare earth turns a cold crawl space into a damp one.
What is the difference between the two barriers? In a Leduc crawl space a thermal barrier is the heavier requirement and an ignition barrier the lighter one. Which a Leduc crawl space needs depends on access and use.
Size the assembly with the R-value calculator, then get a free Leduc quote. More on Crawl Space Spray Foam Insulation Alberta.