How Much Insulation Is Needed In The Attic

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How much insulation is needed in the attic.

According to home advisor insulating your attic can cost between 1700 to 2100. The thicker the better. Square footage of your attic. The average recommended level is 17 inches of r60.

In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill. This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. Blown in insulation overview. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

It is not uncommon to see 15 to 20 of insulation in a well insulated attic. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. The higher the r value the better the thermal performance of the insulation.

Inspecting your attic insulation. The higher the r value the better job the insulation does at preventing the transfer of heat. The insulation in your attic should be at least 12 thick. How well a particular insulation works is expressed by the r value which ranges from 2 0 to 8 0 per inch of insulation.

How much does attic insulation cost. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. The average recommended level is 17 inches of r60. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

If your attic insulation is only a few inches thick or if you can see the ceiling joists you re wasting money on your heating and cooling bills. How much insulation do i need in my attic. Having enough insulation in your attic is one of the best ways to save energy on both heating and cooling your home. Insulation level are specified by r value.

The zone you live in will determine how much insulation you need in your attic. Contractor or insulation installer s fee. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Type and material of your insulation.

You can do it yourself for about 500. R value is a measure of insulation s ability to resist heat traveling through it. In zone 5 the average minimum requirement for attic insulation is 11 inches of r38 fill. 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 insulation in attic for zones 5 7.