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.
How deep should blown insulation be in attic.
Input depth of existing blown in insulation in inches.
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 blower should include two 50 ft.
Add the right kind of insulation.
Inspecting your attic insulation.
How deep to put blown in insulation.
When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
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.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
The higher the r value the better the thermal performance of the insulation.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
You d need a thickness of.
Click the button to calculate the depth in inches and pounds of total insulation required for this job.
Click the button to calculate the approximate r value for this job.
This calculator is to be used as an estimating tool only.
Input length width and desired r value of the area to be insulated.
The insulation in your attic should be at least 12 thick.
When blown into attics and wall spaces loose fill fiberglass offers an average r 2 5 thermal value per inch the higher the number the greater the insulating effect.
Attic insulation is a key to saving energy during the heating season.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
A poorly insulated attic lets heat escape through the roof wasting energy used to warm.
The thicker the better.
If your hoses have to wind their way through the house to reach a scuttle the attic access in a hallway or closet lay down tarps along the way.
It is not uncommon to see 15 to 20 of insulation in a well insulated attic.