Attic Insulation Paper Side Up

Whether you choose faced or unfaced insulation for the attic depends on the.

Attic insulation paper side up.

And when you re retrofitting insulation in the floor of a crawlspace fig. It is a fire hazard when left exposed and can trap moisture in the insulation. That s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it. It can also cause mold rot and other problems in the wall.

The wetter it gets the better it dries. Keep the batting insulation s paper facing pointed up toward the living space above. Make sure the first layer you put down on the floor of the. Kraft paper and its underlying asphalt adhesive are flammable and should always be covered with drywall or other fire resistant material.

The upshot here is that if you put the kraft paper on the wrong side and it gets wet it won t trap moisture. You only want one vapor barrier in your attic and it should be as close to the ceiling as possible to prevent warm moist air from coming up from the heated house and condensing when it hits the cold air in the attic. Always have the paper toward the living area which in the case of an unfinished attic insulating attic floor would be paper face down. Attic hatch or door.

The moisture will get the insulation wet and reduce its effectiveness. If you put it on the right side where the humidity is it s not much of a vapor retarder. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. D installing the kraft faced insulation paper side up provides an adequate vapor retarder.

Affix rigid foam insulation to the attic side of the hatch or door. Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120. The paper facing on insulation has an asphalt layer which acts as a vapor barrier. The warmer air on one outer side of the wall causes water to build up along the colder inner side.

Also on the graph is the permeance of polyethylene. The paper facing should always face toward the inside of the home. Pull down stair or ladder. Facing is a thin layer of paper or plastic attached to one side of batting insulation which is sold in a roll.

Fiberglass batts insulation is installed in the crawl space with the paper facing exposed. 3 press the batting into place between floor joists but do not push so much that the insulation loses its loft.