Calgary has a container in almost every contractor's yard, on a lot of acreages around the city, and increasingly behind small businesses using one as secure storage or a workshop. Shipping container spray foam insulation in Calgary is asked for because an uninsulated steel box in this particular climate does something worse than get cold - it gets wet, repeatedly.
Chinooks make the condensation problem worse, not better
This is the part specific to Calgary. Steady cold is actually easier on a container than what happens here. A chinook can move the outside temperature through twenty degrees in a day, and every time the steel warms and cools, the air inside crosses its dew point again. Repeated freeze-thaw cycling drives more condensation events per winter than a colder, steadier place would. The result is water on the walls, damp stored goods and rust starting from the inside.
Closed cell, sprayed straight to the steel
The fix is to eliminate the cold surface entirely, and that means 2 lb closed cell bonded directly to the interior skin with no gap behind it. Batt cannot achieve this. It sits in front of the steel, air circulates behind it, and the steel goes on being a condensing surface with insulation hiding the evidence. Closed cell also stiffens the structure and is its own vapour retarder at working thickness.
What Calgary owners actually use them for
- Secure tool and equipment storage in contractors' yards, where the contents are what rust.
- Workshops on acreages around Springbank, Bearspaw and out toward Chestermere, heated intermittently.
- Site offices on construction sites, occupied all day, which is the hardest duty of all for condensation.
- Conversions into studios and small buildings, where it has to perform like a room.
The corrugation problem
Container walls are ridged, not flat. Rigid board and batt either bridge the ridges and leave air channels, or need furring out, which costs labour and interior space. Foam follows the profile and bonds to it. That is why it is the normal specification for this structure rather than an upgrade.
Site offices need a covering over the foam
Where a container is fitted out as an office or a workspace rather than storage, the foam needs an approved covering over it, and that is priced with the work rather than raised afterwards.
Shipping Container Spray Foam Insulation Calgary: Common Questions
My sea can is soaking wet inside every spring - is that fixable? Yes, and that pattern is usually chinook cycling. Foam on the steel removes the surface it was condensing on.
Can you do it with things stored inside? The walls need to be clear and accessible to spray. Contents generally have to come out or be moved well clear.
Is closed cell definitely the right one here? For a container, yes. Open cell is the better acoustic product but it is vapour permeable, which is the wrong property against a cold steel skin.
We are fitting it out as an office. Anything extra? One thing. A Calgary container that people occupy needs a thermal barrier over the foam, and that belongs in the scope rather than appearing at inspection.
Estimate your job, then get a free Calgary quote. See closed cell spray foam and spray foam insulation in Calgary.