Air Sealing an Energy Efficient Home

Is your home leaking?  A leaky home can result in high energy bills.  Air leakage takes place when outside air enters a home and warm indoor air leaves the home uncontrollably through small cracks and openings throughout a home.

Where Can Air Leak From?

There are many areas where air can escape:

• Electrical outlets
• Door and window frames
• Electrical and gas service locations
• Under exterior walls
• Weather stripping around doors
• Attic hatches
• Cable or phone lines
• Dryer and hood fan locations

Air can also escape around pipes, wires, foundation seals, and mail slots.  To heat and cool a leaky home can be very expensive.

Air Sealing a New Home

Reducing the amount of air that leaks uncontrollably in and out of a house is a key part of building an energy efficient home.   It’s also an important part to controlling moisture and mold in a home.

When building a new home, the best time to air seal a home is at the framing stage.  Sealing takes place around the electrical and plumbing locations as well as all penetrations that enter and exit the home.  The minimal cost in materials and labour is worth it when you consider that air leakage amounts to 25% to 40% of the average heat loss in winter and cool air loss in the summer.

Sealing an R-2000 Home

An R-2000 home is a home built to standards that make the home on average 50% more energy efficient than homes built to the standard BC Building Code.  R-2000 homes are better sealed than a standard new home resulting in reduced drafts, cold spots, dust, pollen, pests, and noise.