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