Calculating Attic Insulation R Value

R value is a measure of insulation s ability to resist heat traveling through it.

Calculating attic insulation r value.

Recommended home insulation r values. R value measures how well certain building insulation materials can resist heat. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. For more detailed information on insulation in your part of the country and recommended insulation r value for attics walls and floors.

The higher the r value the better the thermal performance of the insulation. This calculator is to be used as an estimating tool only. Go to the energy savers insulation page on the u s. When determining how much insulation you need don t guesstimate calculate.

Insulation level are specified by r value. Click the button to calculate the approximate r value for this job. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Fiberglass and other insulation.

Access the attic through the pull down ladder already installed in your home or with a stepladder placed so you can. 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. Know exactly how much you need with our project calculators. The table below shows what levels of insulation are cost effective for different climates and.

The higher the r value the greater the insulation performance. Input depth of existing blown in insulation in inches. Wear a dust mask gloves and a long sleeved shirt when working with insulation.