08/27/2026
Is 1 inch of closed-cell spray foam really enough? It depends on how you use the building.
For this 2,000 sq. ft. building, 1 inch was used on the roof and walls. Since itās primarily a hangout space with no AC, open doors, and good ventilation, the owner says 1 inch was more than enough for what they needed.
š¬ Pack, planning your own building? Tell us how you plan to use it, and weāll help you figure out what insulation makes the most sense.