How Deep To Make Blow In Insultaion In My Attic

To add to the r value of existing insulation calculate the thickness based on the.

How deep to make blow in insultaion in my attic.

In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. This calculator is to be used as an estimating tool only. Click the button to calculate the depth in inches and pounds of total insulation required for this job. For batts or rolls calculate the number based on the width and length of the product you re using.

This calculator is to be used as an estimating tool only. Hoses that you can connect and snake into the attic. You d need a thickness of. Your helper will feed the blown in insulation into the hopper while you work the hose up in the attic photo 5.

Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. 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. Your choice in insulation can make a real difference in cleanup and mitigation after a burst pipe or house fire.

To insulate to r value 50 with an r value of 3 5 per inch you will need 50 divided by 3 5 or about 14 inches. Measure your attic s square footage. For loose fill cellulose this translates to a total depth ranging from 8 inches. Each bag of fiberglass insulation will cover approximately 65 square feet of attic space to a depth of 10 inches cellulose insulation covers half as much.

Click the button to calculate the depth in inches and pounds of total insulation required for this job. Blown in spray foam batts and blankets. 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. For loose fill read labels.

The blower should include two 50 ft. 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.