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.
R value is a measure of insulation s ability to resist heat traveling through it.
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 measures how well certain building insulation materials can resist heat.
Department of energy website.
How to calculate existing r value in an attic 1.
Insulation level are specified by r value.
The higher the r value the greater the insulation performance.
The higher the r value the better the thermal performance of the insulation.
Input depth of existing blown in insulation in inches.
When determining how much insulation you need don t guesstimate calculate.
This calculator is to be used as an estimating tool only.
Inspecting your attic insulation.
Go to the energy savers insulation page on the u s.
The table below shows what levels of insulation are cost effective for different climates and.
Access the attic through the pull down ladder already installed in your home or with a stepladder placed so you can.
Recommended home insulation r values.
Know exactly how much you need with our project calculators.
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.
Click the button to calculate the approximate r value for this job.