Office building spray foam insulation in Medicine Hat is frequently prompted by a cooling problem rather than a heating one, which puts it at odds with how this work is usually discussed in Alberta.
Cooling load rather than heating load
In most of the province an office envelope is judged on winter performance. Here the cooling season is long enough and intense enough that the summer load is the one straining the building, and the complaints arrive in July. That changes which surfaces matter: the roof and the sunlit walls carry more weight than they would further north, and the perimeter that faces away from the sun matters less.
West-facing glass in the sunniest city
Late-afternoon sun comes in at a low angle and passes straight through glazing rather than being absorbed by the wall around it. Rooms on the west side of a building here become uncomfortable at the end of the working day, every clear day. Insulation cannot fix glass, and it is worth saying so plainly. What it can do is make sure the wall around and between the glazing is not adding to the load, which on many buildings is a substantial share of it.
A gas bill that stopped being cheap
This city's buildings were put up in an era of unusually inexpensive heat, and many were specified accordingly. Owners who have held a building for decades are working from an operating cost that no longer applies, and that is often what prompts the first serious look at the envelope. The buildings are sound; the assumption behind their specification has moved.
Doing it as part of a mechanical upgrade
The most efficient moment to treat an office envelope is immediately before replacing heating or cooling equipment, because a tighter building can be served by smaller equipment. Doing it the other way round means paying for capacity that the improved envelope then makes unnecessary. Where a system is nearing end of life it is worth sequencing the two deliberately rather than treating them as separate projects. On a Medicine Hat building where the cooling side is doing most of the work, that sequence can change the size of the equipment specified rather than only its running cost.
Office Building Spray Foam Insulation Medicine Hat: Common Questions
Our complaints come in summer. Is envelope work still the answer? Often yes. The roof and sunlit walls carry more of the load here than further north, and reducing what arrives reduces what the cooling system has to remove.
Will this fix west-facing offices? Not the glass itself. It makes sure the wall around and between the glazing is not adding to the load, which is frequently a large share of it.
We are replacing the HVAC next year. Which comes first? The envelope. A tighter building can be served by smaller equipment, and doing it the other way means paying for capacity you then do not need.
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