As temperatures drop and you begin to prepare your home for winter, don't forget about your chimney! Regular chimney maintenance not only keeps your home warm and efficient, but it also protects your family from fire and carbon monoxide risks.
Here are ten essential chimney maintenance tips every Canadian homeowner should check off this fall.
Before lighting your first fire of the season, book a professional inspection with a WETT-certified technician (Wood Energy Technology Transfer). Annual inspections help identify issues like creosote buildup, blockages, or damaged flues before they become dangerous.
Creosote is a flammable, tar-like residue that forms inside your chimney when wood burns. Even a small layer can spark a chimney fire. Use dry, seasoned wood and keep fires hot rather than smouldering. Schedule a cleaning if you notice black buildup or a sharp smoky smell.
TIP: You can also find creosote removers at your local hardware store if you prefer the DIY route!
Birds, squirrels, and leaves love to settle in chimneys during the off-season. A stainless steel chimney cap with a mesh screen prevents blockages, improves ventilation, and keeps rain out.
Check that your chimney cap is intact and rust-free. Look closely at the flashing (the metal seal between the chimney and roof) for cracks or gaps that could allow water leaks. Small leaks can lead to major interior damage if left unchecked.
Watch for warning signs like:
Crumbling mortar or loose bricks
White stains (efflorescence) indicating moisture
Smoke spilling into rooms
Strong, lingering odors
If you notice any of these, contact a professional mason or chimney technician before using your fireplace.
Using proper firewood reduces smoke and buildup. Choose seasoned hardwoods such as oak, maple, or birch and wood that’s been air-dried for at least six months. Avoid softwoods, painted wood, or household waste.
Clear out excess ash, sweep the hearth, and keep any flammable items (like kindling or décor) at least three feet away from the fireplace.
Make sure your chimney damper opens and closes easily — and that it seals tightly when not in use. A well-sealed damper prevents warm indoor air from escaping through the chimney during winter.
If you rarely use your fireplace, consider a chimney balloon or draft stopper to reduce heat loss. Regular users might install a glass door or insert to improve energy efficiency and minimize indoor smoke.
Always keep a fire extinguisher nearby and test smoke and CO alarms monthly. Never leave a fire unattended, and double-check that embers are completely out before going to bed.
A few hours of chimney maintenance can mean months of safe, cozy fires this winter. Whether you’re burning wood for warmth or ambiance, staying proactive keeps your home comfortable — and your loved ones safe.
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