Polystyrene Roof Insulation R Value

The report shows that samples of eps insulation had no deterioration in r value.

Polystyrene roof insulation r value.

Insulfoam i vii ii ix xiv and xv. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. This product typically has an r value of 3 6 to 4 0 per inch of thickness. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

The r value for foamular xps insulation is provided from testing at two mean temperatures 40ºf and 75ºf and from two aging conditioning techniques 180 day realtime aged as mandated by astm c578 and a method of accelerated aging sometimes called long term thermal resistance lttr per can ulc s770 03. R value measures how well certain building insulation materials can resist heat. Dupuis and jerome g. Carlisle s tapered insulation helps promote rooftop drainage while providing excellent insulating value.

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. 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. Dees dated august 1984. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior.

Products provide superior insulating properties. Flat tapered eps roofing insulation insulfoam taper is an engineered insulation consisting of a superior closed cell lightweight expanded polystyrene eps. When determining how much insulation you need don t guesstimate calculate. 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.

The higher the r value the greater the insulation performance. Insulfoam taper is cut from the same high quality eps as our flat insulroof products and meets or exceeds the requirements of astm c578 standard.