Barn spray foam insulation in Wetaskiwin usually means a timber-framed hip-roof barn built for livestock below and hay above, being asked to do something it was never designed for, and the loft is the reason the job is harder than it looks.
A building designed around a loft full of hay
The upper volume of one of these was not empty space, it was the insulation. Hay filled it, it was replaced every year, and the animals below were kept warm by the mass over them and by their own heat. Take the hay out, which everybody has, and the building loses the only thing that made the lower floor workable. That is why an empty old barn feels far colder than it did in living memory, and it is why the ceiling over the lower floor rather than the roof is nearly always the right surface to treat.
Sealing a building that was built to breathe
These barns were deliberately open. Air moved through the loft and out at the ridge, and it carried away the moisture that livestock and stored hay both produce. Sealing one without deciding where the moisture now goes puts water into a timber frame that has been dry for a century, and timber that has been dry for a century does not forgive it. The scope has to answer that question before it answers any question about depth.
Working on a frame nobody has assessed
The structure is hand-framed, it has moved, and pieces of it have been repaired by people who were not carpenters. Some of those repairs are better than the original and some are holding by habit. Before anything is sprayed to the underside of a Wetaskiwin barn roof, somebody who knows timber looks at the frame, because adding weight and changing how the building dries are both things a marginal frame will react to.
What these buildings are honestly good for now
A heated workshop in one bay, dry storage in the rest, and a well-sealed room built inside the shell rather than an attempt to condition the whole volume. That last approach is the one that works on these buildings and the one owners resist, because it feels like giving up on the barn. It is not. It is the difference between a usable heated space in an old building and a very large heating bill in a building that will never hold it.
Barn Spray Foam Insulation Wetaskiwin: Common Questions
Why is it not as warm as it used to be? It did. The hay in the loft was doing the work and it is not there any more.
Should we do the roof? Usually not. The ceiling over the lower floor is the surface that pays.
Is the frame up to it? That gets checked first. These are hand-framed buildings that have moved and been repaired.
Size the assembly with the R-value calculator, then get a free Wetaskiwin quote. More on Barn Spray Foam Insulation Alberta.