Before installing insulation in your
attic-to-home air leaks. Most insulation does not stop airflow.
--Duct exhaust fans to the outside. Use a
tightly constructed box to
cover fan housing on attic side. Seal around the duct where it exits
--Cover openings into attic with plywood.
--Seal around chimney and framing with a
--At tops of interior walls, use long-life
caulk to seal small gaps
and holes. Use expanding foam or strips of rigid
foam board insulation
for large gaps.
flashing to maintain fire-safety clearance requirements (usually 3 in.)
heat-producing equipment such as flues, chimneys, exhaust fans, and
housings/fixtures unless light fixtures are IC (insulation contact)
insulation doesn't block soffit vents.
ceiling for water stains that indicate roof leaks or lack of
Repair before you insulate.
seal attic access if it's in a conditioned part of the house.
seal knee walls.
decking, which provides storage space or platform for HVAC unit or hot
tank, is raised above ceiling joists to ensure proper insulation depth.
decking then should be installed securely to the top of the raised
the insulation has been installed.
A qualified home energy auditor will
include an insulation check. An energy assessment, also known as a home
audit, will also help identify areas of your home that are in need of air
Find out the
is, isn't, and/or should be insulated
of insulation you have
R-value and the thickness
or depth of the insulation you have.