Residential spray foam insulation in Wetaskiwin is simpler to talk about than it is in most towns on this site, for one reason: about 72% of the homes here predate 1991 and there has been little new building to dilute that, so there is essentially one list and it applies to nearly every house.
No need to work out which kind of house you have
Most towns on this site have to start by asking what era a building belongs to, because the answer changes everything and the towns are mixed. Here it barely arises. A household can act on the standard advice without first establishing whether it applies to them, and a neighbour's experience transfers because the neighbour's house is the same kind of house. That is genuinely useful rather than a turn of phrase, and it is the thing that makes this town easier to advise than almost any other.
The list, in the order it should be done
The ceiling plane first, sealed at its penetrations rather than deepened. Then the rim joist and the sill it sits on. Then the junctions where every addition meets the original building. Then, and only on this stock, the walls become a genuine candidate rather than a deflection, because a cavity on a house of this age may be empty rather than full. That order holds on street after street in Wetaskiwin and it does not need re-deriving for each property.
What a century of small repairs has left behind
The other constant is history. Four owners, each of whom did something: a bathroom moved, a kitchen extended, a chimney decommissioned, a suite put downstairs and taken out again. None of it was wrong and none of it was ever sealed as part of a system. What that leaves is a building whose losses are concentrated at a large number of small openings rather than at any one surface, which is precisely the condition a sprayed layer addresses and adding material does not.
Sometimes the honest answer is a bigger job than you came for
This is the one town where that has to be said, because on younger stock the honest advice is nearly always to spend less. Here a Wetaskiwin household that asks about one cold room frequently has an assembly question underneath it, and the useful answer is that a partial fix will disappoint. Where that is the case it gets said with the reasoning, and the household decides. What is not acceptable is quoting the small job knowing it will not deliver, which is a temptation on a stock where the small job is easy to sell.
Residential Spray Foam Insulation Wetaskiwin: Common Questions
Is our house typical? Almost certainly. That is unusual on this site and it makes the advice much more direct.
Where do we start? The ceiling plane at its openings, then the rim joist. That order rarely changes here.
Is the wall worth doing? On this stock it can be, which is not true in most towns. It still comes third.
Size the assembly with the R-value calculator, then get a free Wetaskiwin quote. More on Residential Spray Foam Insulation Alberta.