Batt Insulation Lay In Attic

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

Batt insulation lay in attic.

Use cardboard or rigid foam baffles to keep soffit vents open. There are other materials and systems that you can use to insulate your attic. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. One that i like a lot since i built a house out of them is the structural insulated panel. 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. Lay the batts across the ceiling joists covering the existing insulation.

Batt insulation is available at home centers and lumberyards. It s a sandwich of rigid foam insulation and plywood or osb oriented strand board the flaky plywood. 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. Install baffles against the roof sheathing between rafters so insulation does not seal up these avenues of air circulation.

Item 305816 model rxss31525. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Air movement is critical in the attic so moisture moves outside the home. This allows the termination of the batt in an area.

It s safer to build a small enclosure with hardware cloth or plywood to keep loose insulation away from lights and exhaust fans. Blown in insulation requires a professional. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Lay the batts perpendicular to the joists so they do not compress the insulation below.

Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. Don t cover can lights unless they are rated for contact with insulation.