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 board.

Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. 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. 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.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. R value for fiberglass or wool batts per inch is between r3 and r3 5. Hire a pro to install spray foam insulation.

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