A steel building in Alberta has one predictable failure: condensation. Warm interior air hits the cold metal skin, water forms on the underside, and it drips, rusts and stains. Closed-cell spray foam is the standard fix because it does what no batt can - it bonds directly to the steel and stops the moisture at the surface.
Why closed-cell on steel
- Condensation control: the foam eliminates the warm-air-on-cold-metal contact that causes the sweating.
- R-value in little depth: R-6 to R-7 per inch hits a target without eating clearance.
- Rigidity: the foam layer stiffens the panel and dampens the drum of rain and wind.
What it converts
A bare metal building goes from unusable-and-dripping to a dry, heatable shop, warehouse or storage space. It is the same principle behind our Quonset and pole barn work - seal the steel.
Get a free quote. See the commercial hub.
Metal Building Condensation-Risk Checker
Bare metal roofs & walls "sweat" when the surface drops below the dew point — dripping, rust, rotting stored goods. See your risk, then get a quote to stop it.
Educational estimate (Magnus dew-point; bare uninsulated steel ~ outside temp). Real conditions vary. Spray foam raises the interior surface above the dew point and stops the sweating. Get a free assessment →