Attic Insulation Over Old Insulation

Cut around these items it does not have to be.

Attic insulation over 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. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Alignment obstacles in the attic. In older homes specifically asbestos may be found in many different materials from pipe insulation to flooring adhesive to roof shingles.

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. Wear a long sleeve shirt gloves eye protection and a dust mask. Over the insulation install start at the farthest corner. Start in a far corner and start rolling out the foil over the insulation.

Use unfaced batts only to avoid moisture problems. If the space between your joists is already full of insulation add new insulation on top of the joists running the new. Warnings for installing. One of the most common materials containing asbestos fibers is attic and wall insulation.

Don t add faced insulation on top of your existing insulation because the vapor retarder in between layers leads to trapped moisture. Do not tack down any rolled insulation. How to install attic insulation over existing insulation you can install fiberglass batts yourself right over existing insulation but follow these precautions. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.

Batt insulation fiberglass or cellulose tends to fall down from crawl spaces or ceilings starting 15 to 20 years after installation. Loose fill insulation may settle over time leading to air leaks. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. But just because your insulation is old doesn t mean it is dangerous.

When adding roll the insulation perpendicular to the joists not parallel. Supports braces and other obstacles. 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.