How Much Attic Insulation Do I Need

This calculator is to be used as an estimating tool only.

How much attic insulation do i need.

Add the right kind of insulation. The insulation in your attic should be at least 12 thick. How much insulation do i need in my attic. 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.

How much insulation do i need for 40 40 attic. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. The thicker the better. Inspecting your attic insulation.

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. 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. Noticeable difference in comfort and less heat to warm the house. In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill.

When adding additional insulation you do not have to use the same type of insulation that currently exists in your. Bob foley december 1 2017 at 9 27 am. 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.

How much insulation in attic for zones 5 7. Input length and width of area to be insulated. In zone 5 the average minimum requirement for attic insulation is 11 inches of r38 fill. The higher the r value the better the thermal performance of the insulation.