Types Of Insulation And Their R Values

R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.

Types of insulation and their r values.

Batt and roll insulation. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. There are a number of different materials such as fiberglass and cellulose as well as a number of different forms such as batting and blown in. Homeowners can install.

The higher the r value the better the thermal performance of the insulation. Common insulating materials and forms. Cellulose as loose or pellet fibers fiberglass or rock wool are generally the types of material used in loose fill insulation. The table below shows what levels of insulation are cost effective for different climates and.

Insulation blankets batts and rolls spray foam insulation. Foam board or rigid foam. Blown cellulose carries an insulation r value of 3 7 and fiberglass holds an r value of 3 14. In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation.

While wall insulation is limited by the width of the studs different materials provide higher or lower r values. Fiberglass batts for standard 2 4 walls are now available in low medium and high density products that range from r 11 to r 15. Recommended home insulation r values. The common denominator among varieties of insulation is the r value.

Here are the installation methods from lowest to highest average r value per inch. Insulation level are specified by r value.