Polyurethane foam insulates, undercoats, prevents condensation and seals out dust. It is the most effective insulation commercially available at over R6 per inch while still being light weight.
Spray foam is sprayed as two liquids that expand into rigid foam, sealing behind ribs and into all cracks and joints. It has great adhesion to most substrates and reduces road noise and will not squeak.
Sprayed polyurethane foam insulation is unaffected by gas, oil, diesel, grease and salt.