Energy Star Attic Insulation R Value

Either read the r value printed on the batts of your existing insulation or use a measuring tape ruler to measure the depth of the insulation inches.

Energy star attic insulation r value.

Add insulation to attic. Looking across your attic if the insulation is level with or below the attic floor joists you probably need to add more insulation. Enter your data into the fields where indicated. Recommended insulation levels for retrofitting existing wood framed buildings.

The higher the r value the greater the resistance. The higher the r value the better the thermal performance of the insulation. Use this insulation savings calculator to measure the financial impact of increasing your insulation performance. Add insulation to attic.

You can use the small pressurized cans of foam. Add the right kind of insulation. Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier. R value is a measure of insulation s ability to resist heat flow.

R values per inch vary with different types of materials. Recommended insulation levels for retrofitting existing wood framed buildings. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Combined with attic air sealing it can also help to alleviate the formation of dangerous ice dams in the winter.

Insulation should be between any area that separates a heated space from an unheated space. Visual check of insulation levels. Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage. By adding insulation in your attic you can maintain the desired temperature throughout your home much better.

Therefore how well insulation performs is more accurately measured by its total r value than by inches of thickness. Sealing air leaks around your home and adding insulation can help your home be more comfortable and energy efficient and provide up to a 10 savings on your annual energy bills simple fixes include installing weather stripping on doors and caulking around windows while bigger jobs might include sealing leaks and adding insulation in your attic. Existing 3 4 inches of insulation. Methodology for estimated energy savings from cost effective air sealing and insulating.

The attic is usually where you can find some of the largest opportunities to save energy in your home.