How Many Inches Of Insulation Attic

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.

How many inches of insulation attic.

Blown in insulation overview. The recommended r value for attic insulation in ontario is between r 50 and r 60. This calculator is to be used as an estimating tool only. Previous post next post call us today at 888 468 0700.

The higher the r value the better job the insulation does at preventing the transfer of heat. You can do it yourself for about 500. The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Click the button to calculate the depth in inches and pounds of total insulation required for this job. When adding additional insulation you do not have to use the same type of insulation that currently exists in your. R values of common types of insulation.

Inspecting your attic insulation. Add the right kind of insulation. The higher the r value the better the thermal performance of the insulation. In zone 2 the average minimum requirement for attic insulation is 9 inches of r30 fill.

The average recommended level is 14 inches of r49. How much insulation in attic for zones 1 4. First you ll need to determine your r value. The r value of the insulation for every inch of thickness depends on the type of insulation.

How much does attic insulation cost. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. We ll walk you through the steps to help you find the right type of fiberglass attic insulation and the right amount. Depending on type you will need somewhere between 10 and 18 inches of insulation to meet the recommended insulation values.

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. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Installing fiberglass attic insulation first time adding insulation to an attic. Input length width and desired r value of the area to be insulated.

In zone 1 the average minimum requirement for attic insulation is 9 inches of r30 fill. If it s a new building simply reference the energy code map. For loose fill cellulose this translates to a total depth ranging from 8 inches.