How To Insulate A Pole Barn Walls. As you increase your ‘r’ rating, you will drastically improve interior comfort. A pole barn's windows and doors leak air and lose heat.
Spray foam is often used in pressurized cans to fill in gaps around doors and windows during pole barn. Mold, deterioration, mildew and rust are common in uninsulated pole barns. Many people will consider fiberglass insulation since it’s already being used quite often.
Spray insulation is usually made with polyurethane and can be sprayed into walls, attics and under floors to insulate.
Some brands of foam boards have a white foil vapor barrier on each side that works to keep water from traveling into the walls of the pole barn and keeps any mold from deteriorating the structure. Seal all doors with weather stripping and attach a door sweep to the bottom, which will prevent air leaks between the frame and door. I am wanting to use rigid board to help deter rodent nesting. This is typically done by placing metal banding 30” apart down the length of the pole building.