Attic Insulation Paper Side Up

The paper facing on insulation has an asphalt layer which acts as a vapor barrier.

Attic insulation paper side up.

Fiberglass batts insulation is installed in the crawl space with the paper facing exposed. Regardless of whether fiberglass insulation is installed in a wall attic or crawlspace. 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.

If you put it on the right side where the humidity is it s not much of a vapor retarder. The warmer air on one outer side of the wall causes water to build up along the colder inner side. The moisture will get the insulation wet and reduce its effectiveness. Attic hatch or door.

And when you re retrofitting insulation in the floor of a crawlspace fig. Facing is a thin layer of paper or plastic attached to one side of batting insulation which is sold in a roll. It is a fire hazard when left exposed and can trap moisture in the insulation. The paper facing should always face toward the inside of the home.

Affix rigid foam insulation to the attic side of the hatch or door. It can also cause mold rot and other problems in the wall. The upshot here is that if you put the kraft paper on the wrong side and it gets wet it won t trap moisture. The right barrier will block the moisture from reaching the insulation.

The vapor barrier is flammable and according to the manufacturer s label on the insulation the vapor barrier should be installed against the floor. Keep the batting insulation s paper facing pointed up toward the living space above. Pull down stair or ladder. 3 press the batting into place between floor joists but do not push so much that the insulation loses its loft.

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. That s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it. 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.

The wetter it gets the better it dries. Always have the paper toward the living area which in the case of an unfinished attic insulating attic floor would be paper face down.