How Much Insulation Do You Need In Attic

It is not uncommon to see 15 to 20 of insulation in a well insulated attic.

How much insulation do you need in attic.

How much does attic insulation cost. Do i have enough. According to home advisor insulating your attic can cost between 1700 to. We ve rounded up all the most important know how about attic insulation costs products prep work and installation right here.

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 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. Blown in insulation overview.

Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter. Most of ga al ar sc ok etc to a high of 49 for zones 6 8 i e. How much insulation in attic for zones 1 4. Having enough insulation in your attic is one of the best ways to save energy on both heating and cooling your home.

The zone you live in will determine how much insulation you need in your attic. The thicker the better. Keep reading for the details. Insulation level are specified by r value.

How much insulation do i need in my attic. 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. You can do it yourself for about 500. 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.

This range varies from a low of 30 for homes with heat pumps or natural gas furnaces in zone 3 i e. 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. 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. But if you can t afford to shell out a few hundred bucks for this service never fear.

The higher the r value the better the thermal performance of the insulation. R value is a measure of insulation s ability to resist heat traveling through it. Wy mt nh me wi etc. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

The higher the r value the better job the insulation does at preventing the transfer of heat.