How Many Inches Of Insulation Attic

For loose fill cellulose this translates to a total depth ranging from 8 inches.

How many inches of insulation attic. In zone 2 the average minimum requirement for attic insulation is 9 inches of r30 fill. Inspecting your attic insulation. The average recommended level is 17 inches of r60. Fiberglass and cellulose insulation have r values of 2 9 to 3 8 per inch while sprayed foam insulation can go as high as 8 0 per inch.

If it s a new building simply reference the energy code map. How much insulation in attic for zones 1 4. We ll walk you through the steps to help you find the right type of fiberglass attic insulation and the right amount. Add the right kind of insulation.

In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Input length width and desired r value of the area to be insulated. This calculator is to be used as an estimating tool only. The recommended r value for attic insulation in ontario is between r 50 and r 60.

Previous post next post call us today at 888 468 0700. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. How well a particular insulation works is expressed by the r value which ranges from 2 0 to 8 0 per inch of insulation. You can do it yourself for about 500.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. First you ll need to determine your r value. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. The higher the r value the better job the insulation does at preventing the transfer of heat.

The average recommended level is 14 inches of r49. 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 r value of the insulation for every inch of thickness depends on the type of insulation. Depending on type you will need somewhere between 10 and 18 inches of insulation to meet the recommended insulation values.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. Installing fiberglass attic insulation first time adding insulation to an attic. R values of common types of insulation.

Blown in insulation overview. Click the button to calculate the depth in inches and pounds of total insulation required for this job. How much does attic insulation cost.