Rigid Foam Insulation Attic Roof

It is lightweight and easy to work with.

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. 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. Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls. A 4 by 8 board weighs next to nothing and can easily be cut to fit.

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. 2 snap a chalk line between the length measurements. Eps is by far the most versatile of the three rigid insulation options. Rigid foam board also known as foam board or insulation board can be an excellent option for insulation.

Eps is also the most inexpensive of the three types of rigid foam insulation while also meeting the required building and energy codes. Rigid foam panels are about 0 10 0 15 square foot r as we can see in terms of insulation value for your money the batts take a bat to all challengers. 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.