High Density Foam Insulation R Value

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

High density foam insulation r value.

They keep your home at a comfortable temperature without the need to crank your heat. 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. You can even place it under the foundation slab. Rigid insulation is one of the best tools to reduce your energy costs.

Here are some currently available high r building insulation products as well as some specialty very high r insulation materials. Rigid foam insulation also known as insulating boards provide high r values. Open cell foams are typically about 1 2 lb cubic foot. 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.

C or thermal conductance of these materials is the reciprocal of the r value. 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. Install it anywhere from the roof to the foundation. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.

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. It has a lower r value per inch than closed cell foam and is vapor permeable. Closed cell spray foam insulation. This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

Installed faced fiberglass batt insulation with its r value visible r 21. 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. Closed cell foams are more dense and rigid typically about 2 lb cu. Foam insulation densities vary among closed cell vs open cell forms.