Rigid Foam Roof Insulation R Value

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide.

Rigid foam roof insulation r value. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. I ve written several posts about how to insulation basement walls in which i promote the use of foam board insulation as the first line of defense against moisture and mold. Very good air bypass leak sealing properties. R value measures how well certain building insulation materials can resist heat.

After the roof deck is ready the rigid foam insulation is installed. Rigid insulation r value by comparison usually ranges from r 4 0 to 6 5 and may get as high as r 8 7 depending on the insulation material. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems.

There are three basic foam insulation board products on the. Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. R 0 77 30 phenolic foam insulation r values. Foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products choose the strength you need from 15 to 60 psi and exceptional moisture resistance.

All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Products provide superior insulating properties. When it comes to insulation performance the difference is in the details. Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.

Know exactly how much you need with our project calculators. The higher the r value the greater the insulation performance. When determining how much insulation you need don t guesstimate calculate. Rigid insulation is usually made up of fibrous materials or plastic foams.

With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness. 4 8 7 21. Foam board insulation types. 8 3 4 4 8 2 20.

4 5 21. Corrosion problems when in contact with steel roofing moisture. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency.