How Much Blow In Insulation Do I Need For Attic

Labor if hiring someone else you ll pay about 37 65 per hour or 15 per bag for the labor and any additional costs.

How much blow in insulation do i need for attic.

Add insulation to 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. Input length width and desired r value of the area to be insulated. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. How much does attic insulation cost. 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. Blowing attic insulation isn t hard but it s dusty sweaty work.

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. The zone you live in will determine how much insulation you need in your attic. This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. Looking to install blown in insulation but don t know how much you need.

Blown in insulation overview. Length 10 ft width 6 feet bag coverage 16 5 cubic ft r value per 1 3 6 required r val. Inspecting your attic insulation. Then check out our handy insulation calculator.

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. Blown in insulation machine rental if doing it yourself you ll have to pay for machine rental. A furnace or water heater flue in the attic requires an insulation dam around it usually of 1 inch. Existing 3 4 inches of insulation.

Whether you need a wall insulation calculator or an attic insulation calculator lowe s blown in insulation calculator has you covered. 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. 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. This calculator is to be used as an estimating tool only.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. You can do it yourself for about 500. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.