Attic Rafter Insulation Board

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.

Attic rafter insulation board. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. R value for fiberglass or wool batts per inch is between r3 and r3 5. Attic rafter insulation is generally the most cost effective of any energy efficiency upgrade made to a house considering the potential cost savings that can be achieved on the monthly heating bills.

The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance. Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill. Hire a pro to install spray foam insulation. 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 available with straight or tongue and groove edges to help limit air movement. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor.