How Much Insulation Do You Need In Attic

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.

How much insulation do you need in attic.

If your insulation is just level with or below your floor joists i e you can easily see your joists you should add more. The higher the r value the better the thermal performance of the insulation. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e. You can do it yourself for about 500.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. How well a particular insulation works is expressed by the r value which ranges from 2 0 to 8 0 per inch 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.

Insulation level are specified by r value. Blown in insulation overview. The zone you live in will determine how much insulation you need in your attic. We ve rounded up all the most important know how about attic insulation costs products prep work and installation right here.

It is not uncommon to see 15 to 20 of insulation in a well insulated attic. The thicker the better. If you want a customized reading the united states department of energy provides this how much insulation do i need calculator additionally all of the specific residential prescriptive requirements for your county and state can be found on the government s energy codes website. Wy mt nh me wi etc.

Keep reading for the details. Having enough insulation in your attic is one of the best ways to save energy on both heating and cooling your home. According to home advisor insulating your attic can cost between 1700 to. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.

How much does attic insulation cost. R value is a measure of insulation s ability to resist heat traveling through it. No matter what kind of insulation you currently have in your attic one quick way to determine if you need more is to look across the span of your attic. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

How much insulation in attic for zones 1 4. 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. But if you can t afford to shell out a few hundred bucks for this service never fear.

Do i have enough.