High Density Foam Insulation R Value

Closed cell spray foam insulation.

High density foam insulation r value.

It has a lower r value per inch than closed cell foam and is vapor permeable. Here are some currently available high r building insulation products as well as some specialty very high r insulation materials. That means if you used foam it green closed cell which is r 7 per inch it s r value for a 3 5 deep wall cavity would be r 24 5. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

Install it anywhere from the roof to the foundation. Aerogel is an extremely good thermal insulator which at a pressure of one tenth of an atmosphere has an r value of r 20 per inch of thickness compared to r 3 5 inch for a fiberglass blanket. The installed insulation r value depends somewhat on the system manufacturer but generally speaking high density foam 2 0 pcf ranges between r 5 5 and r 6 5 per inch for the aged r value and low density foam 0 5pcf has an r value of approximately r 3 6 inch. It is denser than eps and provides more r value with a rating of 5 per inch of thickness.

Closed cell foams are more dense and rigid typically about 2 lb cu. Open cell foams are typically about 1 2 lb cubic foot. Foam insulation densities vary among closed cell vs open cell forms. They keep your home at a comfortable temperature without the need to crank your heat.

Installed faced fiberglass batt insulation with its r value visible r 21. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. This foam board insulation is available with straight or tongue and groove edges to help limit air movement. The material is costly and fragile factors that have limited its use in residential construction.

Rigid foam insulation also known as insulating boards provide high r values. Aerogel has an r value of about r 10 per inch is 99 air and insulates up to 37 times higher r value than fiberglass. Rigid insulation is one of the best tools to reduce your energy costs. 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.