Cleaning a Wood-Burning Fireplace & Surround
Wood-burning fireplaces are a premium feature in many Ontario homes — particularly in the Victorian and Edwardian heritage housing stock of Toronto neighbourhoods, and in larger suburban homes throughout the GTA and southern Ontario. Keeping a fireplace clean involves both regular owner maintenance and an annual professional chimney inspection and cleaning that is non-negotiable for fire safety.
Annual Professional Chimney Cleaning (Required)
The WETT (Wood Energy Technology Transfer) standard in Canada requires an annual chimney inspection and cleaning for any wood-burning appliance in regular use. Creosote — the combustible residue that accumulates in the flue from wood combustion — is a leading cause of chimney fires. This is professional work requiring a WETT-certified technician, not DIY work. In Ontario, WETT-certified chimney sweeps typically charge $150–$280 for an annual cleaning and inspection.
Ash Removal (Owner Maintenance)
Allow ash to cool for at least 24–48 hours before removal — ash holds heat for a surprisingly long time. Use a metal fireplace ash container with a lid (not a paper bag or plastic container — a fire hazard). Remove ash when the accumulation exceeds 1–2 inches, which impedes combustion airflow.
Glass Door Cleaning
Fireplace glass doors accumulate black deposits from smoke and combustion. A commercial fireplace glass cleaner, or a paste of ash and water applied with a damp cloth, removes buildup effectively. Never use ammonia-based cleaners on fireplace glass — they damage the glass coating over time.
Hearth Surround
Brick or stone surrounds accumulate soot and smoke stains. A stiff brush and warm water with a small amount of dish soap removes most staining. For stubborn soot stains, a diluted TSP (trisodium phosphate) solution is effective — use gloves and rinse thoroughly.