If any Alberta city was built to be retrofitted, it's Medicine Hat. Residential spray foam insulation here is retrofit work almost by definition. Six in ten homes predate 1991, much of it constructed in the era of cheap local gas when air-sealing wasn't a priority. Those homes are comfortable to fix and expensive to ignore - and spray foam is the tool, because it seals the decades-old leaks and insulates in one pass.
Where the Hat's homes lose heat
- Basements - older below-grade walls that never had proper insulation or vapour control; closed-cell fixes both.
- Rim joists - the leakiest band, ubiquitous in the pre-1991 core around Crescent Heights and Ross Glen.
- Attics and additions - decades of settled or missing insulation.
Why now
The old economics ('gas is cheap, who cares') are gone. Every leak in an older Medicine Hat home is now a real cost every winter, which is exactly why the retrofit payback here is among the best in Alberta. Newer areas like Southlands and Saamis Heights benefit at the rooflines and bonus rooms.
A climate that pushes moisture inward for part of the year
Most of this province specifies an envelope against a winter, where warm damp air inside is trying to reach a cold surface outside. Medicine Hat spends a meaningful stretch of the year with that running the other way, hot and humid outside against a cooled interior. 2 lb closed cell still goes where cold ground and moisture are in play, foundation walls, crawl spaces and the rim joist band, and it is the product that does not care which direction the drive is running. Half pound open cell is lighter and cheaper and works on interior partitions and for sound, but it is vapour permeable, so it stays out of below-grade assemblies.
What happens on the day
Access decides almost everything. The reachable wins come first in most Medicine Hat homes - rim joist, crawl space, attic. Existing batt has to come out, since foam bonds to the substrate rather than sitting on it. Occupied-space foam is finished with the code thermal barrier.
Additions and sunrooms are the usual cold rooms
The most frequent complaint on a house here is not the house, it is the part added to it. Sunrooms, enclosed porches and additions built onto an existing home are commonly framed and finished to a lower standard than the original, and the junction where the addition meets the house is rarely continuous in the envelope. That gives a room which is uncomfortably hot in summer and unusable in winter, and it usually pulls the adjacent rooms with it. Because this city sees both a genuinely hot summer and a real winter, that room is a problem at both ends of the year. Treating the addition as its own small envelope, including the junction back to the original structure, is what makes it usable year round.
Residential Spray Foam Insulation Medicine Hat: Common Questions
Will it fix a cold floor? Usually - a cold floor is an air-leak problem before it is an R-value problem, and closed cell fixes both.
Can it go over existing insulation? No. Foam bonds to the substrate, so what is there comes out first, and that removal belongs in the quote.
How soon can we use the room? Product-specific - ask us for the re-occupancy time on your job.
Estimate your job, then get a free Medicine Hat quote. See cost in Medicine Hat.