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