Condensation in a metal building isn't a leak - it's physics. Warm, moist interior air meets the cold steel skin, and water forms on the underside and drips. In Alberta's climate the temperature gap is large for months, so the sweating is relentless. The fix is to stop warm air from ever touching cold steel.
Why the usual fixes fall short
Ventilation alone can't beat a big interior-to-exterior temperature gap, and batt behind the steel leaves an air gap where condensation still forms and then soaks the batt. The moisture keeps coming.
Why closed-cell foam works
Closed-cell sprayed directly to the inside of the steel eliminates the gap - warm air never reaches the cold surface. The same layer adds R-value and acts as a vapour barrier, so it treats the cause, not the symptom. It's the standard fix for shops, warehouses, Quonsets and pole barns.
See metal building insulation and the related sweating roof and rust prevention guides. Get a quote.