Edmonton has one of the oldest housing profiles among Alberta's big cities - close to 59% of Edmonton homes were built before 1991, even more than Calgary. That matters for cost, because an older house has more to gain: leakier rim joists, thin or settled basement insulation, and additions from an era before air-sealing was a code idea. In a city that stays genuinely cold for months, those leaks run up a bill every single day of winter.
How the number is built
Spray foam is quoted per board foot - a square foot at one inch thick. Multiply your area by target thickness by foam type and you have a quote, not a guess:
- Closed-cell vs open-cell - closed-cell costs more per board foot and delivers more (R-6 to R-7, vapour barrier). In Edmonton's older basements it usually earns the premium.
- R-target -> thickness - attic R-38 is roughly 6" closed-cell or 11" open-cell.
- Access - a gutted reno in a mature community like Glenora sprays differently than a finished walk-up in Windermere.
Why Edmonton's age tilts the payback
The pre-1991 stock across the mature core and river-valley communities tends to leak where it's most expensive: rim joists and basements against deep, sustained frost. Because Edmonton's cold is steady rather than swinging, the savings from sealing those leaks compound over a long heating season - which is why an Edmonton retrofit quote often pays back faster than the number first suggests.
Get a real Edmonton number
Estimate board feet, then get an exact quote from a vetted Edmonton installer on your actual space - never a flat rate dressed up as a price. See cost drivers province-wide.