Attic spray foam insulation around Nisku is almost always work on an older farmhouse. Because the land here is a working industrial park beside an airport, there is no modern subdivision stock to draw from, and the houses we are called to were standing on their quarters long before the park was serviced. That matters more than it sounds, because a farmhouse of that vintage was framed in a way that makes the attic behave unlike the attic of any newer house.
The attic is the top of the walls
Older houses in this area were commonly balloon framed, with studs running the full height of the building rather than stopping at each floor. There is no plate boxing the wall cavity in at the top, so the space between the studs is continuous from the basement header to the attic floor. Open one of those attics, look down between the top of the wall and the ceiling joists, and you can see straight down into the wall. The attic is not a lid sitting on the house. It is the open mouth of a set of vertical channels that run the full height of the building, and they move air the whole winter.
Why that one detail decides the job
Heat leaving the house does not need to pass through the ceiling at all. It rises inside the wall cavities and exits at the top, which is why these houses can have a thick, even layer of insulation on the attic floor and still be cold and draughty on the main floor. Any material laid over the ceiling sits beside the leak rather than across it. Closing the tops of the wall cavities is the work, and until it is done, depth is decoration.
The chimney chase
Most of these houses have or had a masonry chimney running up through the middle of the building. Where it passes the ceiling plane there is a framed gap around the brick that was deliberately left open, and it is frequently the single largest hole in the attic floor. If the chimney is still in service it has to be sealed with a non-combustible material held off the masonry, and that is not a foam detail. If it has been abandoned and capped, the chase can be closed properly. Either way it gets identified before anything is sprayed, because it is one of the few places in an attic where getting the material wrong is a safety question rather than a comfort one.
A low heel and nothing at the edge
These roofs usually land tight on the top of the wall, leaving a wedge at the eave with no room for depth and no baffle holding insulation back from the vent. The corners of the upstairs rooms are the coldest part of the house for that reason, and they are also where ice forms on the roof above. Foam solves the edge because it works at the thickness available rather than needing a depth the framing cannot give it, and it stays where it is put instead of being pushed back by wind coming in at the soffit.
Spraying the roof deck instead
Where an upstairs room has been finished into the roof, or where the attic carries ductwork and a furnace, the better answer is often to abandon the vented attic and insulate the underside of the roof deck, bringing the whole space inside the building. That is a bigger job and a bigger decision, and it has to be made deliberately with the roof covering and its remaining life in mind. We will say which of the two we think the house wants, and why.
One company, start to finish
There is no handing you off here. We quote and manage attic spray foam insulation Nisku start to finish, and our crews do the spraying.
Attic Spray Foam Insulation Nisku: Common Questions
Our attic is well insulated and the house is still draughty. Why? In a balloon-framed house the wall cavities open into the attic, so warm air leaves through the walls rather than through the ceiling. Insulation on the attic floor does not cross that path.
Is the old chimney a problem? The gap framed around it is usually the biggest opening in the attic floor. How it gets closed depends entirely on whether the chimney is still in use, so it is checked first.
Why are the upstairs corners always cold? Because the roof meets the wall with almost no room at the eave, so there is very little insulation over that corner and often wind blowing in under it.
How much does attic spray foam insulation cost in Nisku? Sealing work is priced per board foot for the sprayed area, so a job that is mostly closing wall tops and penetrations is a smaller number than a full-depth spray of the whole attic. The honest version is usually the cheaper one.
How do I choose an attic spray foam contractor in Nisku? Ask whether they have looked down the tops of the walls. On a house of this age a quote that only addresses the open attic floor has priced the wrong surface.
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