Attic Insulation Over Old Insulation

Cut around these items it does not have to be.

Attic insulation over old insulation.

Loose fill insulation may settle over time leading to air leaks. Insulation that gets dirty or logged with dust will be less effective. Over the insulation install start at the farthest corner. Use unfaced batts only to avoid moisture problems.

But just because your insulation is old doesn t mean it is dangerous. Don t add faced insulation on top of your existing insulation because the vapor retarder in between layers leads to trapped moisture. How to install attic insulation over existing insulation you can install fiberglass batts yourself right over existing insulation but follow these precautions. 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.

Adding rolled batt or blown in insulation over existing insulation is not a problem. Wear a long sleeve shirt gloves eye protection and a dust mask. If the space between your joists is already full of insulation add new insulation on top of the joists running the new. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

One of the most common materials containing asbestos fibers is attic and wall insulation. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Alignment obstacles in the attic. Start in a far corner and start rolling out the foil over the insulation.

When adding roll the insulation perpendicular to the joists not parallel. Batt insulation fiberglass or cellulose tends to fall down from crawl spaces or ceilings starting 15 to 20 years after installation. 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.

Do not tack down any rolled insulation. Warnings for installing. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. In older homes specifically asbestos may be found in many different materials from pipe insulation to flooring adhesive to roof shingles.