Rigid Foam Roof Insulation R Value

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Rigid foam roof insulation r value.

Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. 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. Included is our r value guide detailing the suggested amount of insulation dependent upon zone as provided by the u s.

When determining how much insulation you need don t guesstimate calculate. 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. For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings. R value measures how well certain building insulation materials can resist heat.

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. Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness. This product typically has an r value of 3 6 to 4 0 per inch of thickness. 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.

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. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. 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. When it comes to insulation performance the difference is in the details.

With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness. The r value is a measurement of the heat loss and heat gain. The higher the r value the greater the insulation performance. 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.

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. 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.