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.

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. 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. It is denser than eps and provides more r value with a rating of 5 per inch of thickness. This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

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. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance.

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.