How Deep To Make Blow In Insulation In My Attic

Ten inches of blown insulation provides an insulating value of approximately r 30 1 inch of fiberglass provides about r 2 7 while 1 inch of cellulose is approximately r 3.

How deep to make blow in insulation in my attic.

Hoses that you can connect and snake into the attic. Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical. Measure your attic to determine how many square feet you need to cover. Cellulose insulation has a baseline r value of 3 8 per inch.

The total r value of installed insulation is calculated by multiplying its baseline r value times the depth of the insulation in inches. This calculator is to be used as an estimating tool only. A poorly insulated attic lets heat escape through the roof wasting energy used to warm. How deep to put blown in insulation.

Insulation input length width and desired r value of the area to be insulated. The blower should include two 50 ft. Click the button to calculate the depth in inches and pounds of total insulation required for this job. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

Your helper will feed the blown in insulation into the hopper while you work the hose up in the attic photo 5.