How Deep Should Blown Insulation Be In Attic

Hoses that you can connect and snake into the attic.

How deep should blown insulation be in attic. The thicker the better. 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. It is not uncommon to see 15 to 20 of insulation in a well insulated attic.

The blower should include two 50 ft. 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. How deep to put blown in insulation. For loose fill cellulose this translates to a total depth ranging from 8 inches.

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. 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. 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.

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. 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. Note from this chart that the ideal r value differs for each part of your home. Inspecting your attic insulation.

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 insulation in your attic should be at least 12 thick. 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 recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.