Rigid Foam Roof Insulation R Value

Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.

Rigid foam roof insulation r value.

All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Also included is the hugely helpful insulation zip code calculator that spells out the suggested amount of r value necessary for the different portions of a structure like foundation interior and exterior walls attic and more. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. When determining how much insulation you need don t guesstimate calculate.

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. The higher the r value the greater the insulation performance. Expanded polystyrene insulation is similar to the foam used for packing peanuts and it s typically used for insulated concrete forms also knows as icf s. Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation.

The r value at 180 day real time age and 75ºf mean temperature is commonly used to compare products and is the value printed on the product. This product typically has an r value of 3 6 to 4 0 per inch of thickness. Falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq. It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer.

R matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Rigid insulation is usually made up of fibrous materials or plastic foams. 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. With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness.

After the roof deck is ready the rigid foam insulation is installed. Included is our r value guide detailing the suggested amount of insulation dependent upon zone as provided by the u s. Know exactly how much you need with our project calculators. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.

The r value for foamular xps insulation is provided from testing at two mean temperatures 40ºf and 75ºf and 180 day real time aged as mandated by astm c578. R value measures how well certain building insulation materials can resist heat.