Putting Insulation Over Old In Attic

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. You do not want to insulate without first seeing to moisture control if you throw a bunch of insulation over the drywall that forms the floor of your attic without first putting in a vapor barrier you will end up condensing the moist house air that is going into the attic and currently venting into the attic within the insulation layer ending up with a soggy insulation mess and eventually leading to rotting roof joists or trusses. The r value can be reduced if the insulation is squashed or flattened.

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Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.

Putting insulation over old in attic.

Add the right kind of insulation. 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 higher the r value the better the thermal performance of the insulation. Spray insulation to the corners and perimeter of the attic first working your way into the center.

Rolled insulation should not be tacked down. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. How to install attic insulation over existing insulation you can install fiberglass batts yourself right over existing insulation but follow these precautions. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. This method can be used in any climate though it historically has been most popular in colder climates.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Direct the blower away from the baffles and attic stairs to minimize cleanup. More insulation installation tricks and tips work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Wear a long sleeve shirt gloves eye protection and a dust mask. When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and.

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