Even though it's heavily treated with fire-retardant chemicals prior to installation, it is a recognized fire hazard by the Consumer Product Safety Commission (CPSC). Spray foam insulation will ignite at 700°F.

Can spray foam start a fire?

Like many materials found in a home or building, spray foam can ignite and burn if exposed to a sufficient heat source. Foam insulation should be considered combustible and handled accordingly.

What temperature can spray foam handle?

Spray foam insulation can range from 130 to 150 degrees Fahrenheit when you spray it. This extreme temperature reacts with the cold surfaces and air temperature and can form condensation on the surface you're trying to insulate.