Installing Insulation Around Rafters
Starting at the perimeter of the attic, measure and cut
the insulation to length. Place the insulation with the vapor
barrier down. If you live in a humid climate, or are placing
insulation over another layer of insulation, place the insulation
with the vapor barrier facing upward.
A. Insert the insulation below any cables when laying insulation
through joist bays.
B. Score the top of the insulation along the cable with
a utility knife.
C. Peel the top half over the cable to cover it.
Sealing doors is an easy trick for reducing energy loss
in your home. Requiring minimum tools and materials, a door
seal runs along the bottom of your door to cover any gaps.
Especially popular in older homes, a door sweep (shown here)
requires screws to stay in place. Thresholds are another
popular option to reduce air flow under the door. Gaskets,
self-adhesive silicone, and foam are options to seal the
tops of doors.
A. Position the seal so that its bristles just touch and
bend on the floor. Use an awl to mark where fasteners are
B. Screw the seal to the door. Move the door back and
forth to check that the seal is positioned correctly, before
securing the final screws.
Sealing Front Doors
Front doors can be a major source of drafts, especially
if your home does not have a porch. Ensure that in addition
to sealing gaps around the edges of the door, you seal
any openings or gaps and caulk any cracks in the trim.
Safety is important when working with insulation materials.
- Always wear a mask, gloves, and safety glasses.
- Avoid direct contact with skin because insulation can
- Never install insulation near flames, electrical equipment,
or heating equipment.
Always build a barrier around any light fixtures to keep
insulation at least 3 in (70 mm) away (see
this page for more info).