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.

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. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. 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.

R value for fiberglass or wool batts per inch is between r3 and r3 5. 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. You can use rigid foam panels or do as tom silva does with nearly all houses these days. It is denser than eps and provides more r value with a rating of 5 per inch of thickness.

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. Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill.