Tapered Roof Insulation R Value

Slope cross sections published feb.

Tapered roof insulation r value.

Firestone iso 95 gl tapered insulation. It is readily available in the two most popular and efficient tapers 1 8 3 18 mm per foot 305 mm 1 and 1 4 6 35 mm per foot 3 18 mm 2. Since a tapered insulation system will increase thickness away from the low points the overall system r value will exceed the prescriptive r value requirements. How does this affect r values on a tapered insulation system.

Carlisle s tapered insulation helps promote rooftop drainage while providing excellent insulating value. When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing system. One area where effective u values are commonly misunderstood is tapered insulation for low slope roofs or at the eaves of sloped roofs. Firestone tapered iso 95 polyiso insulation is available in slopes from 1 16 to 1 2 per foot.

The r values shown above are the minimum r values required to meet code requirements. Factory cut taper that is easy to install and cut builds slope into an otherwise flat roofing system allowing water to drain freely off the roof. Tapered insulation for roofing offers a long term stable r value with excellent dimensional stability compressive strength and water resistance properties. As energy codes become more stringent and better enforced it will become more important to properly calculate effective roof assembly u values r values for compliance.

Tapered polyiso minimizes the negative effects of ponding water and extends the service life of a roof. Acfoam tapered roof insulation helps prevent material waste reduces the roof profile and reduces fastening costs. Properly installed tapered iso 95 gl insulation can extend the life of the roof assembly by eliminating problems associated with ponded water. Properly installed tapered iso 95 polyiso insulation can extend the life of the roof assembly by eliminating problems associated with ponded water.

Tapered roof insulation from atlas roofing corporation is designed to create positive drainage with the highest r values per inch of any rigid board insulation in the industry. The standard tapered panel size is 4 x 4.