Ceiling spray foam insulation in Cochrane is usually a job about the joints rather than the fields. A house built into a hillside does not have one roof. It has three or four at different heights, and what goes wrong goes wrong where they meet.
A roof built in steps down a slope
Following the grade produces a stepped house, and a stepped house has a stepped roof: a section over the garage at one level, the main house at another, a bedroom wing at a third. Each step creates a short vertical wall between two roof planes, and that wall is a ceiling surface even though nobody thinks of it as one. It is frequently the least insulated surface in the building, often has no air seal at all, and it is exactly where owners report a cold band across a room with no obvious cause.
Rooms with the ceiling on the outside at both ends
Where the plan steps, a room can end up with roof above it and a vertical exposed wall at the top of another, so it is losing heat through two surfaces that are both effectively ceiling. That is not a detail a builder's standard package handles well, because the package assumes a flat ceiling with a vented space over it. Treating those transitions continuously, so the insulation and the air seal turn the corner rather than stopping at it, is most of the value on a Cochrane job.
Wind over a ridge finds the upper roof first
The upper section of a stepped roof, and the whole roof of a house near the top of a rise, takes the wind before anything below it does. Air moving over and into a vented roof space strips heat off the top of loose insulation and pushes into any opening at the edge, and the higher plane is where that happens hardest. It is why the top floor of a Cochrane house can behave differently from the same plan built two streets lower down.
What is above the ceiling is not always a roof space
On these plans a ceiling can sit under an unheated storage area, under a deck, or under the flat section joining two roof planes, and none of those is a vented attic. Establishing what is actually above each ceiling is the first thing that happens on site, because the answer changes both the product and the access, and getting it wrong is how a ceiling gets insulated but not fixed.
Ceiling Spray Foam Insulation Cochrane: Common Questions
There is a cold band across the ceiling. What is it? Usually the vertical wall between two roof levels on a stepped house. It is a ceiling surface that is rarely sealed or insulated properly.
Our house is the same plan as one lower down the hill but colder. Why? The higher roof takes the wind first, and wind moving through a vented roof space carries heat off the insulation below it.
Is every ceiling here over an attic? No. On stepped plans a ceiling can be under storage, a deck or a flat link. What is above it decides the approach.
Size the assembly with the R-value calculator, then get a free Cochrane quote. More on Ceiling Spray Foam Insulation Alberta.
After the foam: the interior finish
Spray foam does not get left exposed in a living space -- it has to be covered, and drywall is what does it. We work alongside boarding and taping in Cochrane, an independent drywall contractor, so the two stages are not left to collide on site.