Bonus room spray foam insulation in Cochrane starts from a floor that is not in one condition. On a sloped lot the garage underneath is dug into the hill at the back and fully above ground at the front, so the room above it is losing heat unevenly along its length in a way a flat-lot bonus room does not.
The floor is cold at one end and merely cool at the other
Where the garage below is buried, the floor above it is over a space that is cold but stable. Where the garage is open to the air, with the overhead door in that wall, the floor above is over something much closer to outside temperature. The result is a room with a temperature gradient rather than a single problem, and owners describe it precisely that way, saying one end is usable and the other is not. A thermostat placed at the warmer end means the cold end never gets attended to at all.
The door end is the end that matters
The overhead door is the largest opening in the garage and it sits under one end of the room. Every time it opens in winter the space below that end of the floor is replaced with outside air, and it takes hours to recover. Sealing the floor assembly over that end, and the perimeter where it meets the exterior wall, is worth more than treating the whole floor evenly, which is the usual approach and spreads the budget where it is least needed.
Wind off the foothills hits the gable, not the roof
These rooms sit inside the roof, so their walls are gable end and knee wall rather than normal exterior wall. On a Cochrane lot the gable is frequently pointed into wind coming down the valley, which pushes air into the roof space beside the knee walls and around anything unsealed there. A room can be well insulated in the ceiling and still fail on those two surfaces, and they are the surfaces nobody looks at because they are hidden behind the finished walls.
Doing it while the ceiling below is open
The floor of the room is reached from the garage below, which means the garage ceiling comes down. If anything else is planned in that garage, the two jobs belong in the same visit, because the access is the expensive part and paying for it twice is avoidable. On a Cochrane house that often means treating the garage envelope and the bonus room floor together.
Bonus Room Spray Foam Insulation Cochrane: Common Questions
One end of the room is much worse than the other. Is that normal here? Yes, on a sloped lot. The garage below is buried at one end and open at the other, so the floor is not in one condition.
Where should the money go first? The end of the floor over the overhead door, and the perimeter where the floor meets the outside wall.
Do you work from inside the room? No, from the garage below. If other garage work is planned, do both at once and pay for the access once.
How much does bonus room spray foam insulation cost in Cochrane? The door end is the end that matters and that is where the money goes first. Wind off the foothills hits the gable rather than the roof, so the gable wall is usually in the scope alongside the floor.
How do I choose a bonus room spray foam contractor in Cochrane? Ask where they would spend first if you could only do part of it. If the answer is not the door end and the gable, they have not walked the room on a windy day.
Size the assembly with the R-value calculator, then get a free Cochrane quote. More on Bonus Room Spray Foam Insulation Alberta.
After the foam: the interior finish
Once the foam is in and trimmed, the assembly needs its interior finish, and on an occupied space that finish is also the code-required thermal barrier over the foam. We work alongside drywall finishing in Cochrane, an independent drywall contractor, so the two stages are not left to collide on site.