Rim joist spray foam insulation in St. Albert is the cheapest useful item available on almost every house in this city, and in a stock that has been renovated as thoroughly as this one it is also the most consistently overlooked. The rim joist is the band of framing where the floor structure sits on the foundation wall, running right around the building.
Four renovations later and nobody has touched it
Houses here get looked after. Kitchens, bathrooms, windows, flooring and finishes are done and frequently redone, and the standard of work is high. The band is not part of any of that, because it is behind a finished wall or above a ceiling in an unfinished corner, and because nobody quoting a kitchen has any reason to mention it. So it is entirely normal to find a beautifully maintained St. Albert house whose rim joist is exactly as the builder left it in 1978.
A split level has more band than a bungalow does
On a plan that steps, the floor structure lands on the foundation at more than one level, so there is a band at each of those levels, each running a full perimeter. That means more of this detail per house than a simple two-storey has, and it means part of it is frequently reachable while the rest is behind finished walls in the lower rooms. Establishing how much is accessible is part of the visit and it decides how the work is staged.
Nine months, without a break, every year
The band is a few inches tall and easy to dismiss on that basis. What makes it matter here is duration: the heating season runs the better part of nine months with no warm spell to relieve anything, so a leak in that band runs every hour of every one of those days. A small rate multiplied by that many hours stops being small, which is why this item regularly outperforms much larger and more expensive work.
Three specific things people report afterwards
The floor above the band stops being cold at the edges of the room. The strip of cold that sits along the outside walls of a finished basement goes away. The furnace settles into longer and less frequent cycles. Nobody notices an R-value, and on a St. Albert house where everything else has already been upgraded, those three are usually the last comfort complaints left.
Rim Joist Spray Foam Insulation St. Albert: Common Questions
Our house has been fully renovated. Surely this was done? Almost never. It is not part of a kitchen, a bathroom or a window job, and nobody quoting those mentions it.
We have a split level. Is that different? Yes, there is a band at each floor level rather than one, so there is more of it and some is easier to reach than the rest.
What will we actually feel? Less cold along the outside walls at floor level, and a furnace that cycles less often.
Size the assembly with the R-value calculator, then get a free St. Albert quote. More on Rim Joist Spray Foam Insulation Alberta.