This calculator is to be used as an estimating tool only.
Attic insulation thickness calculator.
Insulation level are specified by r value.
Refer to the project guide for more information on determining the right r value for your home.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Input length and width of area to be insulated.
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.
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Inspecting your attic insulation.
Insulation calculation once you have determined which r value you need you can calculate how much insulation you need.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
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The higher the r value the better the thermal performance of the insulation.
Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job.