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.
Calculating attic insulation r value.
When determining how much insulation you need don t guesstimate calculate.
Recommended home insulation r values.
Department of energy website.
Wear a dust mask gloves and a long sleeved shirt when working with insulation.
Inspecting your attic insulation.
Click the button to calculate the approximate r value for this job.
The table below shows what levels of insulation are cost effective for different climates and.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
R value is a measure of insulation s ability to resist heat traveling through it.
Know exactly how much you need with our project calculators.
Go to the energy savers insulation page on the u s.
Access the attic through the pull down ladder already installed in your home or with a stepladder placed so you can.
Input depth of existing blown in insulation in inches.
The higher the r value the better the thermal performance of the insulation.
Fiberglass and other insulation.
How to calculate existing r value in an attic 1.
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.
Insulation level are specified by r value.