How Many Inches Of Blown Insulation In Attic

In the far north the code minimum for new homes is as high as r 44.
How many inches of blown insulation in attic. 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. Wy mt nh me wi etc. The higher the r value the better the thermal performance of the insulation. Input length width and desired r value of the area to be insulated.
Click the button to calculate the depth in inches and pounds of total insulation required for this job. What to do for your home. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Input depth of existing blown in insulation in inches.
In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Click the button to calculate the depth in inches and pounds of total insulation required for this job. This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. Add the right kind of insulation.
This calculator is to be used as an estimating tool only. Click the button to calculate the approximate r value for this job. This calculator is to be used as an estimating tool only. The zone you live in will determine how much insulation you need in your attic.
To keep the blown in insulation from falling through the attic hatch opening make a 2x12 dam around the hatch perimeter. For loose fill cellulose this translates to a total depth ranging from 8 inches. That is about 13 to 15 inches of blown insulation. This calculator is to be used as an estimating tool only.
That is about 10 to 12 inches of blown insulation. I would add insulation to at least the code minimum. Inspecting your attic insulation. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e.
Input length width and desired r value of the area to be insulated. When adding additional insulation you do not have to use the same type of insulation that currently exists in your.