Edmonton's refrigerated space is weighted towards processing rather than pure distribution - meat, dairy, prepared foods, and the plants scattered through the industrial belt south towards Nisku and Leduc. Cold storage spray foam insulation in Edmonton is therefore usually being asked to work on a building that is wet inside as well as cold.
Processing is a wetter problem than storage
A distribution freezer is cold and comparatively dry. A processing room is cold, humid, and washed down at the end of every shift. The moisture load on the envelope is far higher and it arrives as vapour at temperature, which is the condition that finds any discontinuity in a vapour control layer. Closed cell spray foam is used in these rooms because the insulation and the vapour control are the same material applied in the same pass, so there is no lap, no tape and no sheet to fail.
A long winter runs the drive one way
Unlike the south of the province, Edmonton gets a genuinely sustained winter. For months the outside is colder than the inside of a cooler, which reverses the vapour drive people design for and pushes it outward. On a building where the vapour control was placed for a summer condition only, that is the season when moisture ends up in the wrong plane. It is one of the reasons mixed-use plants here often show damage on the north and east elevations first.
Mixed temperature under one roof
Many Edmonton facilities run a cooler, a freezer and an ambient area in the same building. The partitions between them are envelope, not just walls, and they are the surfaces most often left uninsulated because they are indoors. A minus-twenty room next to a plus-four room has a bigger temperature difference across that partition than the exterior wall has for most of the year.
Older plants and the steel that is already there
A lot of the city's food plants are decades old, with steel structure running straight through the insulated envelope. Every one of those members is a thermal bridge that arrives cold inside a warm space and condenses. Foam applied continuously over the steel is what stops that, and it is the main reason retrofit work here is worth doing properly rather than in patches.
Cold Storage Spray Foam Insulation Edmonton: Common Questions
Why is a processing room harder than a freezer? Because it is humid and washed down. The vapour load is much higher, so a vapour control layer with any discontinuity in it will show a problem far sooner than the same detail in dry storage.
Do the internal partitions need insulating? Usually yes. A freezer wall facing a cooler carries a larger temperature difference than the outside wall does for most of the year, and those partitions are the ones most often skipped.
Is a long cold winter better or worse for the envelope? It is steadier, which helps, but it runs the vapour drive outward for months. A building detailed only for a summer condition is the one that struggles.
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