Combining Rigid Foam And Batt Insulation

This home has 2 of closed cell foam i.

Combining rigid foam and batt insulation.

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. It can potentially replace the vapor barrier and house wrap as well. Foam it green spray foam insulation can be combined with other insulation to make a powerful hybrid method. In this video matt shows off a hybrid insulation system for a high performance home utilizing the flash batt method.

The layering is from the outside inwards roof 1 in. You can use a variety of insulation materials. Nor will that approach address thermal bridging through the studs. It also had 1 foil faced thermax on every exterior wall.

2 foam on all basement exterior walls. You can get similar results as doing all closed cell foam but with less cost. I can t find the proper rigid foam to batt insulation ratio for my climate zone. It s pretty wet here and i m concerned about moisture from the exterior walls.

Rigid foam insulation uses one of three materials. I m building my own house and reading up on ways to make my house more energy efficient. It had 1 2 foil faced thermax on every interior cold wall and ceiling. Flash fill flash batt using 2 different types of insulation for lower cost.

Cape cod for myself just south of allentown pa. Fiberglass batts mineral wool batts rigid foam insulation or spray foam insulation. Airspace rigid foam batts vapor barrier plastic drywall. Understand that the function of the vapor barrier is to prevent moisture from migrating from the warm side into the total thickness of insulation towards the cold side where at some point the temperature gradient will drop.

The studs were 2 x 6 with fg batts. Rigid foam installed on the inside i built a 4500 sq ft. 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. These are panels of rigid foam sold in 4 by 8 foot sheets in a variety of thicknesses from 1 4 to 2 inches it is also sold in large bundled panels joined at the ends accordion style for use as an exterior sheathing material.

Flash and batt is a combination of spray foam insulation with fiberglass batts. Combining rigid and foam insulation. I live in wa state climate zone 8a marine puget sound area. Yes foam board insulation is an excellent complement to batt insulation.