Chimney Services in Ontario
Chimney work covers everything from routine sweeping and inspection to masonry repair, flue relining, cap and crown replacement, and WETT inspections for wood-burning appliances. In Ontario's climate, freeze-thaw cycles are hard on brick and mortar joints, and a chimney that vents a furnace, fireplace, or wood stove needs to be structurally sound and properly lined to move combustion gases out safely. This category brings together 59 businesses across the province that handle this work, from small owner-operator sweep services to full masonry restoration crews.
What chimney services typically include
- Cleaning and sweeping: removing creosote buildup and debris to reduce fire risk and keep drafting efficient.
- Inspections: visual or camera-based checks of the flue liner, crown, and masonry, including WETT inspections often required by insurers for wood-burning systems.
- Repairs and rebuilding: repointing mortar joints, replacing damaged brick, rebuilding a crumbling crown, or fixing a leaning stack.
- Relining: installing a new stainless steel or clay liner when the existing one is cracked, undersized, or incompatible with a new appliance.
- Waterproofing and caps: sealing masonry against moisture and installing chimney caps or dampers to keep out rain, snow, and animals.
What to look for in a chimney contractor
Ask whether the company holds WETT certification if you're dealing with a wood-burning system, since many insurance policies require a WETT inspection report after installation or before renewal. Check that they carry liability insurance and are comfortable working at height on steep or multi-storey roofs. Get a clear scope in writing: is it a cosmetic repointing job, or does it involve liner replacement or structural rebuilding down to the roofline? Ask how they handle debris and whether they protect your roofing and flashing while working around the chimney, since sloppy chimney work is a common cause of new roof leaks.
How our scoring works
We rank chimney contractors on factors including verified credentials such as WETT certification, review volume and consistency, how long the business has operated, and responsiveness to customer feedback. The goal is to surface contractors who do the work reliably and stand behind it, not just the ones with the biggest ad budget. See the full breakdown of factors on our methodology page, or jump straight to the ranked guide to the best chimney services in Ontario to compare the top-rated options.
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All chimney services, ranked by score and relevance
We found 118 businesses offering chimney services; 12 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is chimney services, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
When you submit a quote or contact form through this site, your enquiry may be shared with partner providers who can do the work. We may earn a referral fee from these partners, but our rankings and scores are determined solely by our published method and are never affected by referral fees.
Common questions about chimney services
- How much does chimney repair cost in Ontario?
- It depends heavily on scope. A basic sweep and inspection often runs in the low hundreds of dollars, while repointing a section of masonry or replacing a crown can run into the low thousands. A full liner replacement or major rebuild is the most expensive job and can run several thousand dollars depending on chimney height and access. Always get a written quote after an in-person inspection rather than a phone estimate.
- How often should a chimney be inspected or cleaned?
- A working fireplace or wood stove should generally get an annual sweep and inspection before heating season, since creosote buildup is a fire hazard. Chimneys venting a gas furnace or water heater need less frequent cleaning but should still be inspected periodically for liner damage, blockages, or masonry deterioration, especially after a harsh winter.
- What does a WETT inspection actually check?
- A WETT (Wood Energy Technology Transfer) inspection assesses whether a wood-burning system, including the chimney, liner, clearances to combustibles, and installation, meets safety standards. It's commonly requested by home insurers before they'll cover a property with a wood stove or fireplace, and after buying a home or installing a new appliance.
- How can I tell if chimney work was done well?
- Good repointing should match the existing mortar colour and joint style rather than looking patched. A rebuilt crown should slope away from the flue to shed water, and a new cap should fit snugly without gaps. Ask for photos of the completed work and, for liner jobs, documentation of the liner size and material installed, since this matters for future appliance compatibility and insurance records.