Pole barn spray foam insulation in Calgary deals with a building put together differently from everything else on the property. Post-frame construction carries the load on posts set into the ground with girts spanning between them, and there is no stud wall and no cavity of the kind a house has. That single fact decides most of what follows.
No cavity means nothing to hold a batt
In a house the insulation sits in a cavity that holds it in place. A post-frame wall has girts running horizontally across the posts with the cladding fixed to them, and anything placed between those girts has to be held there by something. Batts sag, fall and leave voids, and once there is a void behind insulation in an unsealed building, air moves through it and the insulation stops doing very much. Foam applied to the inside face adheres where it lands, which is why it suits these buildings.
The posts are a thermal path of their own
Because the structure is the frame, the posts themselves run from inside to outside at regular intervals around the building. Insulating only between them leaves each post as a line where heat crosses, and in a heated pole barn those lines show first as frost and later as staining. Applying foam across the inside face covers the posts and girts rather than stopping at them.
Heated, or just dry
It is worth deciding which of the two is wanted before pricing, because they are different jobs. A pole barn kept dry so equipment does not corrode needs enough to stop condensation forming on the cladding. A pole barn heated to work in needs a full envelope and a heat source sized for it. Most Calgary-area owners want the first and are quoted the second, or the reverse.
The gap at the bottom and the top
Post-frame buildings commonly have an open detail where the wall meets the ground and another where it meets the roofline, and both are continuous around the building. They are the two places where the most air moves and the two most often missed, so they are worth naming in a scope rather than assuming they are included.
Pole Barn Spray Foam Insulation Calgary: Common Questions
Can batts be used in a post-frame wall? They can be fitted but they rarely stay put or stay effective, because there is no cavity holding them and no air barrier around them. Foam bonds to the surface it is applied to.
Do I have to heat it for insulating to be worth it? No. On many Calgary acreage buildings the reason is condensation on the cladding rather than warmth, and that is a lighter specification.
What about the posts themselves? They run from inside to outside, so they are covered rather than worked around. Insulation only between them leaves each post as a path.
Work out the assembly with the R-value calculator, then get a free Calgary quote. More on Pole Barn Spray Foam Insulation Alberta.