How Deep To Make Blow In Insultaion In My Attic

Click the button to calculate the depth in inches and pounds of total insulation required for this job.
How deep to make blow in insultaion in my attic. Your helper will feed the blown in insulation into the hopper while you work the hose up in the attic photo 5. 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. You d need a thickness of. 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.
Each bag lists the required depths for a range of r values and the number of bags needed to cover 1 000 square feet at those depths. Input length width and desired r value of the area to be insulated. Click the button to calculate the depth in inches and pounds of total insulation required for this job. For loose fill cellulose this translates to a total depth ranging from 8 inches.
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. 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. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Hoses that you can connect and snake into the attic. Input length width and desired r value of the area to be insulated. 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.
Your choice in insulation can make a real difference in cleanup and mitigation after a burst pipe or house fire. This calculator is to be used as an estimating tool only. For loose fill read labels. This calculator is to be used as an estimating tool only.
Measure your attic s square footage. 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.