Attic Insulation Paper Side Up

The warmer air on one outer side of the wall causes water to build up along the colder inner side.

Attic insulation paper side up.

D installing the kraft faced insulation paper side up provides an adequate vapor retarder. The right barrier will block the moisture from reaching the insulation. 3 press the batting into place between floor joists but do not push so much that the insulation loses its loft. The upshot here is that if you put the kraft paper on the wrong side and it gets wet it won t trap moisture.

It is a fire hazard when left exposed and can trap moisture in the insulation. Keep the batting insulation s paper facing pointed up toward the living space above. The moisture will get the insulation wet and reduce its effectiveness. The vapor barrier is flammable and according to the manufacturer s label on the insulation the vapor barrier should be installed against the floor.

Facing is a thin layer of paper or plastic attached to one side of batting insulation which is sold in a roll. Whether you choose faced or unfaced insulation for the attic depends on the. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. And when you re retrofitting insulation in the floor of a crawlspace fig.

Fiberglass batts insulation is installed in the crawl space with the paper facing exposed. The wetter it gets the better it dries. Kraft paper and its underlying asphalt adhesive are flammable and should always be covered with drywall or other fire resistant material. Affix rigid foam insulation to the attic side of the hatch or door.

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. Make sure the first layer you put down on the floor of the. Regardless of whether fiberglass insulation is installed in a wall attic or crawlspace. It can also cause mold rot and other problems in the wall.

The paper facing should always face toward the inside of the home. Also on the graph is the permeance of polyethylene. Always have the paper toward the living area which in the case of an unfinished attic insulating attic floor would be paper face down. Pull down stair or ladder.

If you put it on the right side where the humidity is it s not much of a vapor retarder. Attic hatch or door.