How Much Attic Insulation Do I Need

The higher the r value the better the thermal performance of the insulation.

How much attic insulation do i 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. How much insulation do i need in my attic. The insulation in your attic should be at least 12 thick. 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.

This calculator is to be used as an estimating tool only. Inspecting your attic insulation. Add the right kind of insulation. In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill.

How much insulation do i need for 40 40 attic. How much insulation in attic for zones 5 7. If your attic insulation is only a few inches thick or if you can see the ceiling joists you re wasting money on your heating and cooling bills. Bob foley december 1 2017 at 9 27 am.

When adding additional insulation you do not have to use the same type of insulation that currently exists in your. The average recommended level is 17 inches of r60. A few years back i added lots 6 to 9 inches to the 6 inches i had in the attic of my ranch in new england. 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 recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Noticeable difference in comfort and less heat to warm the house. The average recommended level is 17 inches of r60. Input length and width of area to be insulated.