How Much Attic Insulation Do I Need

How much insulation in attic for zones 5 7.

How much attic insulation do i need.

Noticeable difference in comfort and less heat to warm the house. How much insulation do i need for 40 40 attic. Inspecting your attic insulation. The insulation in your attic should be at least 12 thick.

This calculator is to be used as an estimating tool only. The average recommended level is 17 inches of r60. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. 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.

The higher the r value the better the thermal performance of the insulation. Add the right kind of insulation. Bob foley december 1 2017 at 9 27 am. 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.

In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill. It is not uncommon to see 15 to 20 of insulation in a well insulated attic. 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. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

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. Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job. Input length and width of area to be insulated.