Elements which might be employed for a spray foam thermal barrier are drywall and plywood. Gypsum board is yet another thermal barrier as It is just a drywall product with a fireplace retardant in-built. You can find also DC-315 paint that is certainly sprayed right onto the foam insulation https://exteriorcopperlightfixtur12233.frewwebs.com/35263377/acoustic-insulation-no-further-a-mystery