Installation Guide

INSTALLING INSULATION IN ATTICS

BATT AND ROLL INSULATION

Preparing the attic

• Seal and caulk any holes, openings and penetrations through the ceiling.

• Place protective bafﬂes over all attic ventilation, such as sofﬁt or eave vents,

to keep them from being blocked.

• Lay plywood planks across joists, and walk only on those two surfaces.

Adding insulation to previously insulated attics

• Measure the existing insulation with an Attic Ruler to determine how much

insulation must be added to achieve your desired R-value.

• If the height of the existing insulation does not reach the top of the joist, lay

unfaced batts in the joists, on top of the old.

• When joists are full to the top, place additional unfaced batts at right angles

to the existing insulation, to further protect against air gaps.

• Begin by laying insulation at the outer edges, and work toward the middle.

• Keep insulation at least three inches away from vents, and any heat-

producing devices (such as motors or lighting ﬁxtures).

• Only IC-rated lighting ﬁxtures may be touched directly by insulation.

• When necessary, cut insulation to ﬁt around obstructions.

• Staple a piece of batt insulation over the top of the attic access door.

Installing in non-insulated attics

• If there is no pre-existing insulation in the attic, faced insulation may be used,

with the facing side directed toward the home’s interior. Check local current

codes if vapor retarders are required for this application.

• Otherwise, installation of faced batts and rolls is identical to the installation of

unfaced batts and rolls (above).