Attic Insulation R Values Inches

Cellulose insulation has a baseline r value of 3 8 per inch.

Attic insulation r values inches.

Click the button to calculate the approximate r value for this job. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. This calculator is to be used as an estimating tool only.

Achieving greater r values in exterior walls. Input depth of existing blown in insulation in inches. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. The recommended r value for attic insulation in ontario is between r 50 and r 60.

The higher the r value the better the thermal performance of the insulation. Go to the energy savers insulation page on the u s. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Insulation level are specified by r value.

Recycled glass or sand that s melted and spun into fibers. Insulation levels are specified by r value. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. The higher the r value the better the thermal performance of the insulation.

For more detailed information on insulation in your part of the country and recommended insulation r value for attics walls and floors. Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need. To find the r value of the existing insulation in your attic multiply the number of inches of insulation by the r value for your particular type. 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. R value is a measure of insulation s ability to resist heat flow. The total r value of installed insulation is calculated by multiplying its baseline r value times the depth of the insulation in inches. There are many ways to retrofit a home with fiberglass and.

Recommended home insulation r values. Add the right kind of insulation. Where you live different climates require different insulation r values. R values of common types of insulation.

Your home s age if your home is more than 10 year old you likely need more insulation. The higher the r value the better the thermal performance of the insulation.