Over Insulation Attic

You can do it yourself for about 500.

Over insulation attic.

Insulation level are specified by r value. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. The higher the r value the better the thermal performance of the insulation. Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.

Try a spray foam insulation kit to fill cavities gaps cracks expansion joints and other sources of air leaks. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Loose fill or batt the common term for blanket insulation. For diy attic insulation you ve got two choices.

It s often used over existing insulation in the attic where moisture control isn t needed. I believe i was supposed to use r 19 to supplement existing insulation. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Whether you live in a warm weather state as i do or in a cooler northern climate it s hard to stay comfortable and keep your energy bills in check if you don t have adequate insulation in the attic. When adding additional insulation you do not have to use the same type of insulation that currently exists in your. It helps resist moisture that can lead to mold or mildew and provides increased sound and thermal insulation. Add the right kind of insulation.

The higher the r value the better the thermal performance of the insulation. To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below. Laying foil over on top of insulation on the attic floor. This is probably the easiest method to install radiant barrier atticfoil is to lay the foil out over the existing insulation on the attic floor.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Rolls batts or blown in. R value is a measure of insulation s ability to resist heat traveling through it. The extra batting increases r values so it further slows warm air.

Some attic floors that already have a layer of insulation could benefit from an additional application over the existing layer. How much does attic insulation cost. I just bought and installed some r 30 rated insulation over some floorboards in my attic. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

Both can be added to uninsulated attics or layered over existing material. As i was climbing down the ladder i noticed that there was already some insulation beneath the floorboards.