Rim joist spray foam insulation in Lloydminster treats the band of timber sitting on top of the foundation, where the floor structure lands on the wall. It is a narrow strip that runs the whole way round the house, and in nearly every house in this town it has never been sealed.
Reachable in an afternoon, in almost every house here
This is the practical fact that makes the item worth putting first. In an unfinished basement, which is what a great many Lloydminster houses still have, every joist bay is open and visible from below. There is nothing to demolish and nothing to reinstate. A crew works round the perimeter, and the whole job is generally done inside a day. Very little else that improves a house is that accessible, which is why it is the first thing to spend on rather than the last.
A band that has moved with the foundation
The band sits directly on the concrete, so anything the foundation has done over the years shows up here. A small amount of settlement opens the joint between the sill plate and the top of the wall, and that joint runs continuously around the building. Batt pushed into the bay does nothing about it, because batt does not seal a joint. Foam applied as a liquid gets into it and stays stuck to both surfaces, which is the whole reason it is the right product for this detail.
Additions mean more band than the house started with
A lot of houses here have grown. An addition, a rear extension, an attached garage with rooms over it, or a lower level added under part of the building. Each of those brings its own band, and the junction where the new structure meets the old one is the least likely part of the house to have been sealed by anybody. Those junctions get treated in the same visit, because doing one and leaving the other produces a house where the draught simply moves somewhere else.
The floor at the edges of the room above
What a household actually notices is upstairs rather than in the basement. The floor stops being cold along the outside walls, the room stops having a cold edge to it, and the furnace stops cycling as often through the evening. Nobody notices an R-value. They notice being able to sit at the end of a room in January, and on a Lloydminster house that change arrives from a job that took part of one day.
Rim Joist Spray Foam Insulation Lloydminster: Common Questions
How long does it take? Usually part of a day where the basement ceiling is open. There is no demolition involved.
Should batt be removed from the bays before spray foam? Batt does not seal the joint, and the joint is the point. It comes out.
Does an addition change anything? It adds a second band and a junction, and both get done in the same visit.
Size the assembly with the R-value calculator, then get a free Lloydminster quote. More on Rim Joist Spray Foam Insulation Alberta.