Ottawa's climate is brutal on chimneys. Dozens of freeze-thaw cycles each winter drive water into brick and mortar, freeze it, and pry the masonry apart joint by joint — which is why so many chimneys across the Glebe, Westboro, and older suburbs show crumbling mortar, spalling brick, and cracked crowns by their thirtieth year. A neglected chimney is more than a cosmetic problem: it can leak water into the home, drop bricks onto the roof, or, in the case of a wood-burning system, become a genuine fire and carbon-monoxide hazard. This page explains what chimney repair contractors in Ottawa actua...
Chimney contractors in Ottawa handle a spectrum of work from routine maintenance to full rebuilds. The most common service is repointing — grinding out deteriorated mortar joints and repacking them with fresh mortar — which is the single most effective way to extend a masonry chimney's life in our freeze-thaw climate. They also repair or rebuild the crown (the concrete cap on top that sheds water), replace cracked or missing chimney caps and spark arrestors, rebuild the exposed section above the...
Repointing and crown repair are the two jobs that prevent most chimney failures in Ottawa. Mortar joints are sacrificial — they are meant to weather before the brick does — so grinding out failed mortar and repacking with the correct mix restores the chimney's water resistance and structural integri...
Chimney repair pricing in Ottawa depends on height, access, and the extent of damage, but 2026 ranges give a working baseline. Partial repointing of the exposed section above the roof commonly runs $800–$3,000, while full repointing of a tall or badly deteriorated chimney can reach $3,000–$8,000. Crown repair or recasting typically costs $500–$2,500 depending on size and condition. A new chimney cap runs $250–$900 installed, and flashing repair or replacement usually lands between $500 and $2,00...
For any wood-burning appliance — fireplace, wood stove, or insert — a WETT inspection is the standard of safety in Ottawa and across Ontario. WETT (Wood Energy Technology Transfer) certification means the inspector is trained to evaluate whether a solid-fuel system meets code and manufacturer clearances. A WETT inspection is commonly required when buying or selling a home with a wood-burning appliance, when arranging home insurance, and after any significant chimney work. The inspector checks cl...
Whether a permit is needed depends on the scope of the chimney work. Routine maintenance and repair — repointing, crown repair, capping, flashing, and cleaning — generally does not require a City of Ottawa building permit. More substantial work can. Rebuilding a significant portion of the chimney, altering its structure, or installing a new solid-fuel appliance and chimney system may require a building permit and inspection. Installing or replacing a wood-burning appliance should meet the Ontari...
Chimney work combines masonry skill with fire-safety knowledge, so vet on both. For repointing and rebuilds, hire an experienced mason who understands historic mortar matching, which is essential on Ottawa's older brick. For wood-burning systems, prioritize WETT certification and ask to see it. In every case, confirm at least $2 million in liability insurance and valid WSIB clearance, verified directly on the WSIB site, because chimney work happens at height where the risk of injury and property...
Chimney repair rewards early action, because small problems compound fast in Ottawa's freeze-thaw climate. The most effective way to save money is to repoint and cap before deterioration spreads: a $2,000 repointing done on time prevents a $15,000 rebuild later. Have the chimney inspected during a roof replacement so any needed masonry and flashing work is done while access equipment is already on site, sharing mobilization costs. Bundling the cap, crown, and repointing into one visit avoids rep...
Partial repointing runs $800–$3,000 and full repointing $3,000–$8,000. Crown repair is $500–$2,500, a new cap $250–$900, and flashing $500–$2,000. Rebuilding above the roofline costs $3,500–$10,000, and a full rebuild can exceed $10,000–$20,000. Liner installation runs $2,000–$5,000, while a WETT inspection is $150–$400. Access, chimney height, and scaffolding are major cost drivers.
WETT (Wood Energy Technology Transfer) inspection evaluates whether a solid-fuel appliance and chimney meet code and clearances. It is commonly required when buying or selling a home with a wood-burning system, for insurance, and after major chimney work. If you burn wood, periodic WETT inspections plus annual sweeps are the safety baseline.
Ottawa endures dozens of freeze-thaw cycles each winter. Water soaks into brick and mortar, freezes, expands, and pries the masonry apart joint by joint. Combined with cracked crowns and failed flashing, this drives the crumbling mortar and spalling brick seen on many older Ottawa chimneys by their thirtieth year.
Routine repairs — repointing, crown repair, capping, flashing, and cleaning — generally need no permit. Rebuilding a significant portion, altering structure, or installing a new solid-fuel appliance may require a City of Ottawa building permit. Gas appliance venting must be handled by a licensed TSSA-registered technician.
Repointing, crown repair, and rebuilds need temperatures reliably above about 5°C for mortar to cure, so late spring through fall is the working season. Inspect in early spring after winter damage, then schedule repairs for warm months so the work cures before the next freeze-thaw season.