Rigid Foam Sheathing Siding

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.

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. 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. Use thicker siding patterns in widths of 8 203 mm or less. But if you use wood clapboard siding foam sheathing can cause trouble.

Plywood has an r value of 1 25 and fiberglass batts have an r value of 3 14. 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. 3 benefits of rigid foam sheathing. 1 in x 4 ft x 8 ft.

Johns manville r 6 common. Insulated foam sheets are also used as an insulated sheathing underlayment for exterior siding. Moisture can get trapped between the siding and the foam leading to paint failure and causing clapboards to cup and curl. The cavity is stuffed with fiberglass then expanded foam sheathing followed by cedar board and batten siding.

The panels provide a continuous energy efficient surface. Rigid foam across foundation also. A common choice is drywall. Install rigid foam over or in place of plywood osb or other wall sheathing.

Thick narrow siding. Follow with a 2x4 frame wall and insulate it with batt insulation. Our house is 2x6 construction built in 1984 near milwaukee wi. It is offered in multiple thicknesses and dimensions in both square edged and tongue and groove joints.

Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood or metal framed exterior walls.