Plastic Sheathing For Attic Insulation

Some builders rely on batts with attached kraft paper facing to do that job but tom recommends unfaced batts covered in plastic with all the seams taped shut.

Plastic sheathing for attic insulation.

Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates. Rigid insulation provides thermal protection and it can also serve as an air and moisture barrier. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away.

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. The presence of mold inside your home even if it s in an unused place such as the attic can cause. 1 inch and 2 inch thicknesses are common. Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed.

Install the plastic sheeting only after the insulation wiring and plumbing have been completed. Insulative sheathing over the outside of the wall frame between the metal framing pieces and your exterior siding. Batts in the rafters. The boards are available in several thicknesses and r values.

Item 491792 model hslw12 400. The best vapor barrier to use is roll of plastic sheeting. Many professional installers prefer to use unfaced batt insulation in the walls then a clear plastic vapor barrier over the inside face as it is easier to seal. For the same reason insulation shouldn t touch the roof s underside.

Rigid insulation sheathing is made of a rigid plastic foam that is typically sold in 4 8 or 4 10 foot boards. Note that this insulative sheathing cannot take the place of plywood or other seismic bracing if your attic has metal joists you may want to place rigid foam insulation between the joists and the ceiling drywall. 12 ft x 400 ft clear 0 31 mil plastic sheeting.