Insulating Beneath Siding

Wall 2 insulated with high density spray foam at a nominal 4 inches in the cavity for a cavity r value of 24.

Insulating beneath siding.

Installation of this insulation type under fiber cement siding can create an incredible 600 more energy efficient home. The insulation is glued in place for a permanent connection. Fit the rigid foam insulation snugly and seal all seams with the specialized tape. To be completely efficient this insulation type has to mold perfectly with the inside of your home siding.

Continuous insulation under new siding has become a popular way to improve energy efficiency on. Wall 1 insulated with only r 19. As a result the siding cups cracks and sheds paint. In fact you can check if it is a correct insulation installation by pressing on the house siding.

Apply sealant around windows doors and trim. Behind this skin is a layer of expanded polystyrene eps that is form fitted to the stepped siding profile of the vinyl. Hot sun can overheat wood siding causing it to dry excessively and crack. Foam is less permeable to water vapor and the back of the siding stays wet as the face of the siding dries.

3 ways to insulate siding and reduce home energy loss blown in insulation. Wall 4 r 19 in the cavity plus r12 2 foam board under the vinyl. To secure the foam use two inch cap nails. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold.

Insulated vinyl siding has an outer skin made of polyvinyl chloride or pvc just like standard vinyl siding. Wall 3 r 19 in the cavity plus r6 1 foam board under the vinyl. Has 16 8 2 6 studs.