Machine shed spray foam insulation in Didsbury is work on storage buildings around a town that has been farmed from since long before the corridor grew, which means many of the sheds are considerably older than what is now parked in them.
Sheds older than the machinery standing in them
A shed put up decades ago was sized and built for equipment that was smaller, cheaper and far less sensitive to damp than what replaces it. The building has not changed and the contents have. That is the practical reason this work gets asked about around Didsbury: not because the shed got worse, but because what is standing in it now has electronics in it and a replacement cost that makes condensation an expensive thing to ignore.
Condensation forms on the machine, not on the building
Worth stating clearly because it is counter-intuitive. A large steel object sitting in an unheated shed holds its temperature while the air around it changes. When milder, wetter air arrives the building warms quickly and the machine does not, so water forms on the coldest thing present, which is the equipment. That is why a shed can look dry and the machinery inside it still be wet, and it is the mechanism this work interrupts.
The roof deck is the whole of the correct scope on most of these
On the majority of these buildings the deck is the surface radiating heat away overnight and the surface water forms on and drips from. Treating it removes the cold plane overhead and slows the daily temperature swing enough that the cycle largely stops. Walls add cost and, on a building that is parked in rather than worked in, they frequently do not earn their place. An owner near Didsbury handed a whole-building price is entitled to ask which surface each part of it is treating and what that surface is doing wrong, and a quote that cannot answer that was written from a floor area rather than from a visit to the building.
What an old shed has to be checked for first
Foam is applied to sound, clean, dry steel. On a building of this age the checks are the sheet fixings, corrosion where water has sat along the eave and at the base, and whether the roof is leaking now. Where the roof needs work, the roof comes first, and occasionally the right answer on one of these is that the building is not worth the investment yet. That answer gets given.
Machine Shed Spray Foam Insulation Didsbury: Common Questions
Why is the equipment wet when the shed is dry? Water forms on the coldest object present, which is the machine, not the building.
Do the walls need doing? Usually not. The roof deck is the surface that matters on a building that is parked in.
What is checked before quoting? Fixings, corrosion at the eave and base, and whether the roof leaks. Repair comes first.
Size the assembly with the R-value calculator, then get a free Didsbury quote. More on Machine Shed Spray Foam Insulation Alberta.