How To Put New Insulation In Attic

Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing.

How to put new insulation in attic.

Move across the attic until you ve hit your desired height at every point. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Once the old insulation has been removed and the attic is cleaned the installation of the new insulation can begin. The first layer will sit between the joists and the second layer will run perpendicular over the joists.

Fill every joist space completely and evenly with the insulation leaving attic vents uncovered. The first layer should have the facing against the drywall to act as a vapor barrier. Level uneven spots with a rake. With a helper to load the blower with insulation as needed start at the perimeter of the attic and work toward the attic access door.

Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. A new rebate program encourages dwp customers to install. Blow in insulation until the hopper is empty. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.

Lay the batts across the ceiling joists covering the existing insulation. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. New dwp incentive program launches the los angeles department of water and power building downtown. Find a pre screened local home insulation contractor.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Wood joists must be covered to allow the air to move. Typically this is done either by placing batt or roll insulation in between the ceiling joists or by using a blower to blow loose fill insulatio n in between the joists. Then pivot in place and do the same thing to the other side.