How To Insulate An Old Steel Building. The beauty of spray foam insulation is that it’s similar in nature to spray painting. It also helps deaden sound, which can be an important benefit in a commercial or agricultural steel building with metal walls and roof.
Sure, there are obvious differences in both the application and the material type, but the principles of. Since the exterior of your building has been stuccoed, the best way to insulate the building is with an exterior layer of rigid foam. Not only will you have trapped moisture in the blanket causing rot, rust, oxidation, mold etc., the damp blanket will provide less and less r value as the moisture builds.
You will need to install a vapor barrier on the heated sideof the ceiling, then insulate between it and the roof.
Tape all windows, vents, outlets, switches and other openings with plastic. Since the exterior of your building has been stuccoed, the best way to insulate the building is with an exterior layer of rigid foam. Spray the foam as directed. Tape all windows, vents, outlets, switches and other openings with plastic.