Putting Insulation Over Old In Attic

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Putting insulation over old in attic. Add the right kind of insulation. Do we put a moisture barrier over the insulation when we have finished the install. The old insulation is very compressed or has decomposed. When the time comes to sell your home a well insulated attic is a plus.

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. To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below. We are losing a lot of heat in the winter through the attic. It use to fill the space between the boards and now there is very little.

When adding additional insulation you do not have to use the same type of insulation that currently exists in your. House build around 1960 63. The higher the r value the better the thermal performance of the insulation. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing.

Although insulation professionals will handle the installation for you here are some things to keep in mind about removing old insulation and installing new insulation over old insulation according to energy star. Original insulation looks like little cotton balls.