How Much Insulation Is Needed In The Attic

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 insulation is needed in the attic.

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. Inspecting your attic insulation. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. 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 does attic insulation cost. In zone 5 the average minimum requirement for attic insulation is 11 inches of r38 fill. Having enough insulation in your attic is one of the best ways to save energy on both heating and cooling your home. The higher the r value the better the thermal performance of the insulation.

Wy mt nh me wi etc. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. The main factors that impact the cost are. 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. The thicker the better. You can do it yourself for about 500. How much insulation do i need in my attic.

The average recommended level is 17 inches of r60. Deciding how much insulation your attic needs is a matter of knowing the r value of your insulation material and the total r value you need your attic to meet then purchasing enough material to make the equation work. Contractor or insulation installer s fee. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e.

In zone 6 the average minimum requirement for attic insulation is 14 inches of r49 fill. 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. This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. 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. Square footage of your attic. Blown in insulation overview. Type and material of your insulation.

Insulation level are specified by r value. The zone you live in will determine how much insulation you need in your attic. How much insulation in attic for zones 5 7. According to home advisor insulating your attic can cost between 1700 to 2100.

The table below shows what levels of insulation are cost effective for different climates and locations in the home.