Batt Insulation Lay In Attic

Blown in insulation requires a professional.

Batt insulation lay in attic. Air movement is critical in the attic so moisture moves outside the home. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Lay the batts perpendicular to the joists so they do not compress the insulation below. Use cardboard or rigid foam baffles to keep soffit vents open.

Position the batt of insulation at the outer edge of the attic and roll the batt in the channel between the joists toward the center of the attic. Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. Don t cover can lights unless they are rated for contact with insulation. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. There are other materials and systems that you can use to insulate your attic. Lay the batts across the ceiling joists covering the existing insulation. Install baffles against the roof sheathing between rafters so insulation does not seal up these avenues of air circulation.

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. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.

Batt insulation is available at home centers and lumberyards. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. It s a sandwich of rigid foam insulation and plywood or osb oriented strand board the flaky plywood. Rockwool safe n sound r 59 7 sq ft unfaced stone wool batt insulation 15 25 in w x 47 in l.

The paper facing on insulation has an asphalt layer which acts as a vapor barrier. This allows the termination of the batt in an area.