Rigid Foam Insulation Attic Roof

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.

Rigid foam insulation attic roof.

Now someone will look at an insulation value chart and says but foam has a higher r value per inch so it s better insulation since you have non infinite space to put it in. A 4 by 8 board weighs next to nothing and can easily be cut to fit. It is lightweight and easy to work with. Rigid foam board also known as foam board or insulation board can be an excellent option for insulation.

The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance. This construction approach was first used in the 1970s and it has been implemented much more widely since it was first included in the international code council s icc model building code in 2007 irc section 806 4. It can be applied on the roof floor and walls and it s most widely used in structural insulated panels and insulated concrete forms. Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board.

Eps is also the most inexpensive of the three types of rigid foam insulation while also meeting the required building and energy codes. 2 snap a chalk line between the length measurements. Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls.