The attic access door can also be a source of excessive heat loss. Installing proper
weatherstripping and a locking mechanism will help reduce heat loss.
Ceilings and attics
The attic is a vital part of your home that requires proper ventilation. The recommended
R-value in Northwestern New Brunswick is R-40.
Recessed lighting fixtures
Spaces around recessed lighting fixtures in ceilings that can be a source of air
loss must be sealed. Stained insulation or frost in the winter are sure signs of
hot air leaks in the attic.
Air can escape through electrical wall outlets, which must be properly sealed by
installing CSA-approved foam cushions. Place safety seals in outlets that are seldom
Clothes dryer air outlet
Replace the clothes dryer air outlet with an energy efficient outlet system, and
seal the outlet hose with polyurethane and the frame with acrylic latex.
An uninsulated end joist will make the basement and ground floor much colder. Joists
must be insulated to an R-20 rating.
Basements represent 20 to 35% of all heat loss in a home, due to their large, uninsulated
surface above and below ground level. Contrary to popular belief, earth has very
poor insulation properties. Thus, the foundation must be insulated against heat loss.
Exterior walls account for 10 to 30% of heat loss. Exterior walls must normally be
insulated to a minimum R-20 value. It is also important to consider air and vapour