Attic Rafter Insulation Board

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Attic rafter insulation board.

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. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill. This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

R value for fiberglass or wool batts per inch is between r3 and r3 5. Hire a pro to install spray foam insulation. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters.

You can use rigid foam panels or do as tom silva does with nearly all houses these days. 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.