High Density Foam Insulation R Value

Rigid foam insulation also known as insulating boards provide high r values.

High density foam insulation r value.

It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Open cell foams are typically about 1 2 lb cubic foot. This foam board insulation is available with straight or tongue and groove edges to help limit air movement. 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.

The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. 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. 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.

Closed cell spray foam insulation. 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. Installed faced fiberglass batt insulation with its r value visible r 21. Foam insulation densities vary among closed cell vs open cell forms.

Here are some currently available high r building insulation products as well as some specialty very high r insulation materials. Install it anywhere from the roof to the foundation. 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.

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. Rigid insulation is one of the best tools to reduce your energy costs. Closed cell foams are more dense and rigid typically about 2 lb cu. Open cell spray foam absorbs and holds water.