Metal Building & Shop Insulation in Montgomery, AL

Metal building and shop insulation solves two problems at once around Montgomery: heat and condensation. Bare steel panels soak up the summer sun and radiate it into the building, so an uninsulated shop can feel hotter inside than out by mid-afternoon. And whenever warm, humid air touches steel that is cooler than its dew point, water condenses and drips onto tools, vehicles, feed or whatever else is stored inside. With humid air most of the year, that drip is a familiar problem in shops, barns and garages across the region.

Why closed-cell foam is the usual choice

Closed-cell spray foam bonds directly to the steel, so there is no gap for moist air to reach the cold surface. HomeGuide lists it at R-5 to R-7 per inch. A couple of inches insulates the panels, stops condensation and adds some stiffness. Open-cell foam is lighter and cheaper, but it lets vapor through, so it is rarely the right pick directly on steel in a humid climate unless a separate vapor control is planned.

Planning the building

We look at how you use it. A shop you plan to air condition needs the walls and the roof done well, plus attention to the big door and the slab edge. A storage building that only needs to stop dripping may only need the roof and upper walls. Some owners want only the roof done now and the walls later. We also check for existing faced fiberglass blanket, which often holds moisture against the steel and may need to come out.

Coverings and code

Foam inside an occupied building usually needs a thermal barrier or an ignition barrier depending on how the space is used, and a heated or cooled shop attached to a house may fall under residential code. We tell you what covering the use calls for, and we suggest checking with the city or county building office for any permit questions before work starts.