As the colder weather sets in and furnaces and fireplaces start getting used again, homeowners in cold-climate areas like Ottawa and Gatineau should pay closer attention to the spots in their homes where cold air tends to sneak in. Even small gaps can add up to real heat loss and higher energy bills over the course of a winter.
Windows and doors are some of the most common culprits for cold air infiltration. Over time, weatherstripping wears down and seals shrink, leaving small gaps that let cold air through. If you feel a draft near a window or door frame, it's worth checking the weatherstripping and caulking, and replacing them if they're no longer doing their job.
Attic access hatches are frequently overlooked, but an unsealed or poorly insulated hatch can let a surprising amount of heat escape straight into the attic. Recessed pot lights are another common weak spot, especially older models that aren't rated for direct contact with insulation — they can create small gaps in the attic's air seal.
Outlets and switches on exterior walls are often installed without a proper air seal behind them, leaving a direct path for outside air to get in. Foam gaskets behind the plate covers are an inexpensive, simple fix.
Gaps between baseboards, window trim, and the wall are easy to miss but can let a surprising amount of air through, especially in older homes where the house has settled over time. A bit of caulking along these gaps can make a noticeable difference.
The rim joist area, where your home's foundation meets the framing, is one of the least insulated parts of many homes. It's a common source of drafts and heat loss, and one that's often missed because it's not somewhere people think to check.
A fireplace that isn't in use but has an open or poorly sealed damper can act like an open window, letting warm air escape straight up the chimney. Make sure the damper closes tightly when the fireplace isn't in use.
Tracking down and sealing these problem spots before the coldest months hit can make a real difference in comfort and energy costs. If you're not sure where your home is losing heat, a professional energy audit or a simple walk-through with a qualified contractor can help pinpoint exactly where to focus your efforts.