Machine shed spray foam insulation in Rocky Mountain House is applied to the underside of the roof deck and, where the building earns it, the walls. Nobody heats these buildings, and this work is not about heating them.
Unheated is fine, wet is not
That is the whole of the argument and it is worth stating first, because owners assume this page is going to try to sell them a heated building. It is not. Equipment does not mind being cold. It minds being wet, and it minds going through repeated cycles of wet and dry with condensation forming on it each time. An unheated Rocky Mountain House shed can be a dry shed, and that is a much cheaper target than a warm one.
The deck radiates to the sky and everything below pays
The mechanism is simple. On a clear night the roof sheet loses heat to the sky and drops below the temperature of the air inside the building. Whatever moisture is in that air condenses or frosts onto the underside of the deck, and because it forms overhead it lands on the equipment when it releases. Insulating that deck removes the coldest surface in the building and slows the daily swing, which is what stops the cycle rather than merely reducing it.
Ranch and bush equipment in one building
The contents around here are mixed: a tractor and haying equipment, a quad or a side by side, a trailer, chainsaws and cutting gear, and whatever the property needs for firewood. Some of that is robust and some of it is not. Small engines, chains, bars, batteries and anything with an electrical connector suffer far more from a damp building than a tractor does, and they are usually the things stored at the back where nobody looks until they are needed.
The parts and small tools that live in there
The other thing these buildings hold is the accumulation: fasteners, fittings, spare parts, hand tools, and a shelf of things bought for a job that has not happened yet. All of that is steel in a building that condenses on a schedule, and it corrodes quietly over years. It is rarely what gets a shed treated and it is frequently what an owner notices afterwards, because the difference in a parts shelf is visible in a way that a machine's condition is not.
Machine Shed Spray Foam Insulation Rocky Mountain House: Common Questions
Why insulate a building we do not heat and are not going to? Good. This is about keeping it dry, and dry is achievable without heat.
Why does the equipment get wet when it has not rained? The roof deck drops below the inside air on a clear night and the moisture forms on it, then falls.
Roof only? On most sheds, yes. Walls follow only if somebody is working in it rather than parking in it.
Size the assembly with the R-value calculator, then get a free Rocky Mountain House quote. More on Machine Shed Spray Foam Insulation Alberta.