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Attic insulation thickness calculator.
This calculator is to be used as an estimating tool only.
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Greenfiber insulation calculator easy to follow steps for calculating the perfect amount of insulation needed for your project.
Insulation calculation once you have determined which r value you need you can calculate how much insulation you need.
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.
Inspecting your attic insulation.
Insulation level are specified by r value.
Refer to the project guide for more information on determining the right r value for your home.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
Achieving greater r values in attics 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.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.