Attic Insulation Over Old Insulation

Adding rolled batt or blown in insulation over existing insulation is not a problem.

Attic insulation over old insulation.

But just because your insulation is old doesn t mean it is dangerous. Cut around these items it does not have to be. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Batt insulation fiberglass or cellulose tends to fall down from crawl spaces or ceilings starting 15 to 20 years after installation.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Start in a far corner and start rolling out the foil over the insulation. 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. Loose fill insulation may settle over time leading to air leaks.

Wear a long sleeve shirt gloves eye protection and a dust mask. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. When adding roll the insulation perpendicular to the joists not parallel. Alignment obstacles in the attic.

Warnings for installing. Do not tack down any rolled insulation. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and. In older homes specifically asbestos may be found in many different materials from pipe insulation to flooring adhesive to roof shingles.

Over the insulation install start at the farthest corner. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Insulation that gets dirty or logged with dust will be less effective. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.

One of the most common materials containing asbestos fibers is attic and wall insulation. How to install attic insulation over existing insulation you can install fiberglass batts yourself right over existing insulation but follow these precautions. Supports braces and other obstacles. If the space between your joists is already full of insulation add new insulation on top of the joists running the new.