Optimal Insulation For Attic

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

Optimal insulation for attic.

A large machine outside churns the chunks and uses air to blow them up through the hose. Insulation level are specified by r value. See the department of energy s doe ranges for recommended levels of insulation below. Attic insulation for homes that are situated in cold climates homeowners need to ensure that they have a minimum of r 49 in their attics this is equivalent to about 16 inches of fibreglass insulation.

Radiant barrier insulation makes use of reflective materials often foil to keep heat from entering through the roof into your attic. The installer taking his best firefighter pose holds a large hose and blows the chunks into the attic. This type of insulation. 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.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. If installed properly radiant barriers can be of benefit in. R value is a measure of insulation s ability to resist heat traveling through it. Rolls and batts are produced of mineral wool and fiberglass.

If your home is in a warmer climate you require an r 38 or higher or about 12 more. Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

The higher the r value the better the thermal performance of the insulation. It s available in fiberglass mineral wool plastic fibers and natural fibers. A better choice is insulation that comes in smaller chunks. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Plan to pull up the flooring and layer new insulation on top of the old. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.