The maximum thermal performance or r value of insulation is very dependent on proper installation.
Types of insulation and their r values.
Common insulating materials and forms.
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.
Batt and roll insulation.
Here are the installation methods from lowest to highest average r value per inch.
The common denominator among varieties of insulation is the r value.
R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.
Foam board or rigid foam.
Insulation blankets batts and rolls spray foam insulation.
Blown in or loose fill insulation.
Blown cellulose carries an insulation r value of 3 7 and fiberglass holds an r value of 3 14.
R value is a measure of insulation s ability to resist heat traveling through it.
The table below shows what levels of insulation are cost effective for different climates and.
The higher the r value the better the thermal performance of the insulation.
Recommended home insulation 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.
Insulation level are specified by r value.
While wall insulation is limited by the width of the studs different materials provide higher or lower r values.
Homeowners can install.