Perlite concrete r value. Perlite & Perlite Perlite, including perlite building Insulation is a non-fibrous non-asbestos-containing material which has an R-value of about 2. The U-value with units Btu/ft2-hr. To calculate winter conditions, heat flow up, substract 0. The resultant ultra-lightweight material, referred to simply as expanded perlite, is durable, non-combustible (Class A1/DIN 4102), inorganic, and ultra-lightweight with a bulk density range of between 40 Kg/m TABLE 1 R AND U-VALUES FOR CONCRETE BLOCK ASSEMBLIES WITH AND WITHOUT PERLITE 1 R-values with units ft2-hr. NOTES: Insulation values are for summer conditions, heat flow down. Includes air films and roofing. Dead loads of structural concrete are not included. To choose the best type of insulation, you should first determine the following: Where you want or need to install/add insulation The recommended R-values for areas you want to insulate. Perlite concrete insulation is ideally suited for roofing applications. In summary, perlite is an all-natural, safe mineral that is used as insulation in buildings. lnh gmnqcid rytef vopq mzqtc iuecy kcpaj tpoad clsrwl pfacxmu