How To Install Insulation In The Attic Rafters

Attic rafter insulation facts and tips installation if you have a pitched roof with an attic space one of the simplest ceiling insulation methods is to lay a quilt mineral fibre glass fibre hemp sheepswool materials are all capable of satisfying the performance requirements of the scheme.

How to install insulation in the attic rafters.

Unwrap a roll of. If your house doesn t already have a layer of insulation between the joists you ll need to install one before adding a layer over the joists. The baffles will allow circulation to continue even though insulation has been installed directly in the path of the rafter air movement. Typically you will fill the insulation blower with the insulation and blow it between the attic floor joists.

Level uneven spots with a rake. Don a long sleeved shirt safety glasses gloves and a dust mask to prevent irritating fiberglass from reacting with. Then blow another layer on top of the roof rafters. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end.

Use 3 8 inch heavy duty staples every six inches. Staple it to the rafters or scabbed on boards with a staple gun so that the paper backing is toward the interior of the room to act as a vapor barrier. If you have a solid floor covering the roof rafters use the claw end of a hammer to pull the floor up in several locations and blow the insulation under the boards. It is important to ensure that the quilt is installed.

Lay the batts across the ceiling joists covering the existing insulation. 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. How to install rafter insulation 1. Air circulates from the lower part of the roof overhang through the rafters and out the ridge vent of your roof.

Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor. Start in a corner away from the attic hatch and fit the roll insulation between the joists facing against the drywall. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.

Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass. Fill every joist space completely and evenly with the insulation leaving attic vents uncovered.