Spray foam insulation for the right building assembly
Spray foam can provide insulation and air control at the selected product's specified thickness. Ask whether open-cell or closed-cell foam suits the assembly, how moisture will be managed, and what protective barriers are required. Performance and utility savings depend on the complete building and installation.
Correctly installed spray foam can reduce air leakage through the surfaces included in the work. The effect on energy use depends on existing leakage, insulation, HVAC equipment, weather, and occupant behavior. It does not eliminate every source of heat loss or guarantee a percentage saving.
Insulation and air sealing can change heating and cooling loads. A qualified HVAC professional should assess equipment sizing for the completed building; choosing spray foam alone does not establish that smaller equipment is appropriate or guarantee lower operating costs.
