Combining Rigid Foam And Batt Insulation

Flash fill flash batt using 2 different types of insulation for lower cost.

Combining rigid foam and batt insulation.

Fiberglass batts mineral wool batts rigid foam insulation or spray foam insulation. Also squeezing an r19 batt into the remaining space will reduce the performance of the batt. Foam board insulation can add insulation and eliminate thermal bridging when used in wall and ceiling assemblies insulated with batts. Nor will that approach address thermal bridging through the studs.

Airspace rigid foam batts vapor barrier plastic drywall. The layering is from the outside inwards roof 1 in. You can get similar results as doing all closed cell foam but with less cost. It can potentially replace the vapor barrier and house wrap as well.

It s a technique used by some insulation contractors where a flash of closed cell spray foam at 1 to 2 inches is applied in an effort to create an air seal and then puts fiberglass batt insulation over it. Researchers who have measured the moisture content of rim joists with rigid foam on both sides haven t discovered any problems the moisture content of the rim joists isn t worrisome. Foam it green spray foam insulation can be combined with other insulation to make a powerful hybrid method. Cutting rigid foam board to fit between studs will be labour intensive and will not offer any significant improvement to your wall s thermal performance.

Yes foam board insulation is an excellent complement to batt insulation.