Tapered Roof Insulation R Value

Slope cross sections published feb.

Tapered roof insulation r value.

Carlisle s tapered insulation helps promote rooftop drainage while providing excellent insulating value. Properly installed tapered iso 95 polyiso insulation can extend the life of the roof assembly by eliminating problems associated with ponded water. Properly installed tapered iso 95 gl 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 r values shown above are the minimum r values required to meet code requirements. How does this affect r values on a tapered insulation system. Standard material is johns manville enrgy 3 tapered and flat polyisocyanurate roof insulation. 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.

Acfoam tapered roof insulation helps prevent material waste reduces the roof profile and reduces fastening costs. 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. Firestone tapered iso 95 gl polyiso insulation provides an efective and economical solution. Firestone tapered iso 95 polyiso insulation is available in slopes from 1 16 to 1 2 per foot.

Provides good dimensional stability excellent insulation value with stable r value and fire resistance. One area where effective u values are commonly misunderstood is tapered insulation for low slope roofs or at the eaves of sloped roofs. 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. Tapered insulation for roofing offers a long term stable r value with excellent dimensional stability compressive strength and water resistance properties.

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. When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing system.