Rigid Foam Sheathing Siding

Rigid foam sheathing can cause moisture to accumulate on the back of siding and cause staining buckling and damage to finish coats.

Rigid foam sheathing siding.

1 in x 4 ft x 8 ft. But if you use wood clapboard siding foam sheathing can cause trouble. The following recommendations are meant to minimize potential problems when cedar sidings are applied over rigid foam sheathing. Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over the wall sheathing on the outside.

Install rigid foam over or in place of plywood osb or other wall sheathing. Plywood has an r value of 1 25 and fiberglass batts have an r value of 3 14. 3 benefits of rigid foam sheathing. A common choice is drywall.

1 in x 4 ft x 8 ft ap foil 1 faced polyisocyanurate foam board insulation item 101645 model 90001019. It is offered in multiple thicknesses and dimensions in both square edged and tongue and groove joints. The cavity is stuffed with fiberglass then expanded foam sheathing followed by cedar board and batten siding. Johns manville r 6 common.

More effective insulation with r values ranging from 3 6 to 8 0 rigid foam sheathing has much better insulation per inch than other materials i e. Follow with a 2x4 frame wall and insulate it with batt insulation. Rigid foam across foundation also. Our house is 2x6 construction built in 1984 near milwaukee wi.

Insulfoam rigid foam is a high performance built to spec sheathing insulfoam rigid foam is a high performance built to spec sheathing insulation that provides superior r value and moisture resistance. Thick narrow siding. Insulated foam sheets are also used as an insulated sheathing underlayment for exterior siding. The panels provide a continuous energy efficient surface.

Use thicker siding patterns in widths of 8 203 mm or less.