Basement spray foam insulation in Wetaskiwin is work on foundations that were built before a basement was expected to be a room. With about 72% of the housing predating 1991 and a good part of it much older than that, the wall in most of these houses was never designed for what is now being asked of it.
A foundation built for a furnace, not for a family room
The older foundations here were poured or laid when the space below the house held the heating plant, the preserves and the laundry. Damp-proofing was minimal or absent, there was no expectation of a finished room, and the wall was never part of a conditioned envelope. Everything that goes wrong when somebody finishes one of these follows from that: it is not a defective wall, it is a wall being used for something it was not built for.
Stone, block and poured, sometimes in one building
On a stock this old the foundation is not one thing. There are stone walls on the oldest houses, concrete block on others, poured walls on the mid-century stock, and on any house that has been extended there are frequently two of those meeting at a corner. Each behaves differently, each takes water differently, and the junction between two of them is where the trouble concentrates. Establishing what the wall actually is comes before any discussion of what goes on it.
The chimney base, which is where these walls usually fail
On a house that was built with a central chimney there is a masonry mass running from a footing in the basement to above the roof, and on the oldest Wetaskiwin stock it is frequently the single worst thermal and air path in the building. Where the appliance has been replaced by something side-vented, the flue is now an open shaft from the basement to the outside air, and the masonry around it is cold all the way down. It is invisible because it looks like part of the structure rather than like a defect. Establishing whether that chimney is live, capped or simply open is worth doing before any wall is treated, because a sealed basement with an open flue in the middle of it is not sealed.
Finishing it now, when it was finished once already
A good number of these were developed into rooms decades ago, and that finish is now old enough to be at the end of its own life: panelling, a dropped ceiling, carpet on the slab. Households frequently arrive intending to redo the room rather than to insulate it, which is the ideal moment and they do not always realise it. Everything comes out anyway, the wall is exposed anyway, and the envelope can be corrected for a fraction of what it would cost as its own project. On a Wetaskiwin house the useful question is therefore not whether to insulate the basement but when the room is next being touched.
Basement Spray Foam Insulation Wetaskiwin: The Covering Requirement
Where a Wetaskiwin basement is going to be a living space, the foam has to be covered by a thermal barrier, which in practice means the framing and boarding that follow. It is worth settling at the start, because a basement insulated for storage and one insulated as a family room are different scopes and opening the same wall twice is the outcome nobody wants. More on thermal barrier vs ignition barrier.
Basement Spray Foam Insulation Wetaskiwin: Common Questions
Why does it only get damp in spring? That is the normal pattern on this stock, and it is drainage rather than insulation. It comes first.
What is our foundation made of? On a house this age it could be stone, block or poured, and sometimes two of them. It gets checked.
Does the old stud wall come out? Usually yes on an older finish, and it is the biggest single variable in the price.
Size the assembly with the R-value calculator, then get a free Wetaskiwin quote. More on Basement Spray Foam Insulation Alberta.