In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.
How deep should blown insulation be in attic.
How deep to put blown in insulation.
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.
Note from this chart that the ideal r value differs for each part of your home.
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.
The blower should include two 50 ft.
The insulation in your attic should be at least 12 thick.
You d need a thickness of.
Inspecting your attic insulation.
For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3.
Attic insulation is a key to saving energy during the heating season.
Your helper will feed the blown in insulation into the hopper while you work the hose up in the attic photo 5.
For loose fill cellulose this translates to a total depth ranging from 8 inches.
Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing.
It is not uncommon to see 15 to 20 of insulation in a well insulated 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.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
A poorly insulated attic lets heat escape through the roof wasting energy used to warm.
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.
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 thicker the better.