Attic Insulation Paper Side Up

Regardless of whether fiberglass insulation is installed in a wall attic or crawlspace.

Attic insulation paper side up.

Pull down stair or ladder. Attic hatch or door. Fiberglass batts insulation is installed in the crawl space with the paper facing exposed. It can also cause mold rot and other problems in the wall.

The vapor barrier is flammable and according to the manufacturer s label on the insulation the vapor barrier should be installed against the floor. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. Also on the graph is the permeance of polyethylene. If you put it on the right side where the humidity is it s not much of a vapor retarder.

It is a fire hazard when left exposed and can trap moisture in the insulation. 3 press the batting into place between floor joists but do not push so much that the insulation loses its loft. The moisture will get the insulation wet and reduce its effectiveness. And when you re retrofitting insulation in the floor of a crawlspace fig.

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. The wetter it gets the better it dries. The right barrier will block the moisture from reaching the insulation.

That s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it. Whether you choose faced or unfaced insulation for the attic depends on the. 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.

Facing is a thin layer of paper or plastic attached to one side of batting insulation which is sold in a roll. The warmer air on one outer side of the wall causes water to build up along the colder inner side. 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. Kraft paper and its underlying asphalt adhesive are flammable and should always be covered with drywall or other fire resistant material.

Make sure the first layer you put down on the floor of the. The upshot here is that if you put the kraft paper on the wrong side and it gets wet it won t trap moisture.