Insulation Board For Attic Roof

It s often used over existing insulation in the attic where moisture control isn t needed.

Insulation board for attic roof.

Better materials for attic roof insulation are rigid foam boards and spray foam insulation. Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. To create an airtight seal use foil tape. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance.

The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends. Your board must leave at least inch gap between the board and the roof. Insulating your roof and attic space will help retain energy in your home often leading to cost savings and comfort improvement. It can act as an air and moisture barrier in addition to providing very high r value.

Use furring strips nailed into the sides of the rafters so that you have something to fasten the board to. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Try a spray foam insulation kit to fill cavities gaps cracks expansion joints and other sources of air leaks. It helps resist moisture that can lead to mold or mildew and provides increased sound and thermal insulation.

Install foam boards with the foil side facing you.