Wear a dust mask gloves and a long sleeved shirt when working with insulation.
Calculating attic insulation r value.
How to calculate existing r value in an attic 1.
Inspecting your attic insulation.
The higher the r value the better the thermal performance of the insulation.
The table below shows what levels of insulation are cost effective for different climates and.
Recommended home insulation r values.
Fiberglass and other insulation.
Go to the energy savers insulation page on the u s.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
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.
Click the button to calculate the approximate r value for this job.
When determining how much insulation you need don t guesstimate calculate.
Input depth of existing blown in insulation in inches.
Department of energy website.
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 greater the insulation performance.
This calculator is to be used as an estimating tool only.
Access the attic through the pull down ladder already installed in your home or with a stepladder placed so you can.
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.
R value measures how well certain building insulation materials can resist heat.