How Much Blow In Insulation Do I Need For Attic

Inspecting your attic insulation.

How much blow in insulation do i need for attic.

This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. 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. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Length 10 ft width 6 feet bag coverage 16 5 cubic ft r value per 1 3 6 required r val.

Wy mt nh me wi etc once you ve determined the r value of insulation you need to decide which type of insulation you will use. Recommended insulation levels for retrofitting existing wood framed buildings. Add insulation to attic. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

Then check out our handy insulation calculator. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e. You can do it yourself for about 500. Blowing attic insulation isn t hard but it s dusty sweaty work.

How much does attic insulation cost. Whether you need a wall insulation calculator or an attic insulation calculator lowe s blown in insulation calculator has you covered. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. This calculator is to be used as an estimating tool only.

A furnace or water heater flue in the attic requires an insulation dam around it usually of 1 inch. Input length width and desired r value of the area to be insulated. The zone you live in will determine how much insulation you need in your attic. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

12 area 10 6 60 square ft required depth to achieve r value needed r 12 r 3 6 3 3 inches volume needed 60sq ft 0 275 3 3 12 converting to decimal ft 16 5 cubic feet you would need one bag in this case. Looking to install blown in insulation but don t know how much you need. Blown in insulation overview. 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.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. Labor if hiring someone else you ll pay about 37 65 per hour or 15 per bag for the labor and any additional costs.