Click the button to calculate the approximate r value for this job.
How many inches of insulation in attic.
Once you ve determined the r value of insulation you need to decide which type of insulation you will use.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
The average recommended level is 17 inches of r60.
In zone 5 the average minimum requirement for attic insulation is 11 inches of r38 fill.
The average recommended level is 17 inches of r60.
Click the button to calculate the depth in inches and pounds of total insulation required for this job.
In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill.
Input depth of existing blown in insulation in inches.
This calculator is to be used as an estimating tool only.
This calculator is to be used as an estimating tool only.
Depending on type you will need somewhere between 10 and 18 inches of insulation to meet the recommended insulation values.
Inspecting your attic insulation.
Then check out our handy insulation calculator.
11 pests that could be hiding in your attic step 5.
Add the right kind of insulation when adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
The recommended ceiling insulation level for most attics is r 38 or about 12 to 15 in.
From the drywall depending on the insulation type.
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.
Input length width and desired r value of the area to be insulated.
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 the coldest climates insulating up to r 49 is recommended.
Get exactly what you need with lowe s blown in insulation calculator looking to install blown in insulation but don t know how much you need.