Quonset spray foam insulation in Wetaskiwin is work on what is usually the oldest steel building on the yard, and the thing that separates it from every other building standing there is what it is sitting on, because most of these were never given a floor.
Bare ground under a steel arch
A great many of the quonsets around this town stand on gravel or on packed dirt, with the arch fixed to a low concrete curb or to nothing much at all. That ground is a continuous source of moisture into the building all year and a source of cold for half of it. Spraying the steel above while leaving that condition unchanged treats the smaller half of the problem, and the building will still run damp, so the floor question is settled before the arch is quoted rather than after.
The arch has no wall and no roof, which changes everything
There is no point on the curve where the surface stops being a wall and starts being a roof, so there is no eave, no wall plate and no top plate to terminate anything against. Every detail that a rectangular building solves at a junction has to be solved here as a continuous run instead. That suits a sprayed layer better than it suits any other product, which is the honest reason this building type comes up so often on this subject, and it is also why anything fitted in pieces keeps coming loose along the curve.
The end walls are a different building
The curved steel is one problem and the two flat ends are another. They were framed in timber or steel by somebody else, they carry the large door, and they have moved independently of the arch since the day it went up. The gap where the flat end meets the curve runs the full height on both sides and it is the largest single opening in most of these buildings. Treating it is straightforward and it is regularly left out of a quote that only priced the arch.
What it is worth doing to an old one
The condition that decides this is the steel at the bottom of the curve, where it has been sitting in wet gravel for fifty years. Where that is sound the building has decades left and sealing it is money well spent. Where it has gone the honest advice on a Wetaskiwin yard is to spend the money on the base rather than on insulation, because a layer sprayed to the inside of steel that is failing at the ground makes the problem harder to see and does not slow it down.
Quonset Spray Foam Insulation Wetaskiwin: Common Questions
Does a quonset need a floor before it is insulated? Then that is the first item. Bare ground puts moisture into the building all year.
Where does it leak air? Usually where the flat end walls meet the curve, full height, on both sides.
Is an old one worth insulating? Depends entirely on the steel at the bottom of the curve. That gets looked at first.
Size the assembly with the R-value calculator, then get a free Wetaskiwin quote. More on Quonset Spray Foam Insulation Alberta.