Rim joist spray foam insulation in Whitecourt is the recommendation for a household that wants to spend a modest amount and notice the difference, because the band where the floor structure sits on the foundation runs right around the building and is nearly always the least finished part of it.
An unfinished band at head height in the basement
Standing in an unfinished basement and looking up at the wall where it meets the floor above, the ends of the joists sit in a row with a board across them and a gap behind. On most houses there is either nothing there or a piece of batt pushed in. It is exposed to outside on one side and to the room on the other, it is at the height people's heads are, and it is the last part of the building anybody thinks about because it is not a wall and not a floor.
Why the material already there does so little
Insulation held in place slows heat crossing it and does nothing about air moving around it. In this particular location air movement is the whole problem: the joint between wood and concrete was never sealed, the joist ends sit in pockets, and warm damp air from the basement reaches cold surfaces behind whatever is in the way. Applying foam to the surfaces themselves closes the path and insulates in one operation, which is why this detail appears on nearly every quote here.
A day, from inside, with no decisions about finishes
This is the item that separates a job that happens from one that gets talked about. The band is reached from inside the basement, it does not involve taking a room apart, nothing has to be redecorated afterwards, and on most houses it is done in a day. For a Whitecourt household on shift work with people asleep in the building, a single short job in an unfinished basement is also the least disruptive thing available.
Anything bolted through it from outside comes in with the cold
A deck ledger is fastened straight through this band into the floor structure, and so is a hose bib, a dryer vent, an air conditioner line set and whatever the last owner added. Each of those is a hole made from outside through the one part of the building that was never sealed, and around each of them there is a gap that was filled with whatever was in the truck. On a Whitecourt house with a deck across the back this accounts for a whole elevation of the band, and it is treated as a set of individual penetrations rather than as part of a continuous run.
Rim Joist Spray Foam Insulation Whitecourt: Common Questions
What if there is insulation there already? Then air is moving around it, which is what the complaint actually is.
How long does it take? Usually a day, from inside the basement, with nothing to redecorate afterwards.
Does a deck ledger change the rim joist work? Then the ledger is bolted straight through this band, and that elevation gets checked hole by hole.
Size the assembly with the R-value calculator, then get a free Whitecourt quote. More on Rim Joist Spray Foam Insulation Alberta.