Chimney Repair Ottawa

From chimney cap replacement to full masonry reconstruction, built to Ontario Building Code standards with a 5-year warranty.

Ottawa Chimney Repair Specialists

Ottawa's climate is one of the most demanding environments for chimney masonry in Canada. With over 60 freeze-thaw cycles per year, unprotected or poorly built chimneys deteriorate rapidly, and the damage can be deceptively hidden until it becomes serious. At Canadian Masonry Services, chimney repair is one of our core specialties. Our founder has been working with chimney masonry for 56 years, and that depth of knowledge shows in every project we take on.

The Chimney Cap Problem

The single most important thing protecting your chimney is its cap. A proper masonry chimney cap prevents water from pooling on top of the chimney, directs runoff away from the brick and mortar, and protects the flue tiles from direct exposure to the elements.

We consistently reject metal chimney caps, not because they're never used, but because they're the wrong solution for masonry chimneys. Metal oxidizes if it isn't perfectly coated, flat-profile metal designs allow water to pool, and the caulked seams that hold them fail within a few years. Once that seal breaks, water flows directly into the chimney structure.

Our chimney caps are built from masonry, sloped stone with a continuous drip edge, a 2-inch waterproof concrete weathering cap, and expansion joint material around the flues. We build to Ontario Building Code specifications, and we back our caps with a 5-year warranty.

Warning Signs Your Chimney Needs Repair

  • Cracked or missing chimney cap
  • Deteriorating brick faces (spalling) near the top of the chimney
  • Missing or crumbling mortar between bricks
  • White staining (efflorescence) on the chimney exterior
  • Water staining on interior ceilings near the fireplace
  • Rusted firebox components or damper
  • Visible gaps between the chimney and the roof flashing
  • Cracks in the chimney crown

Our Chimney Repair Services

We handle the full range of chimney masonry work, from a single cracked cap to full chimney reconstruction from the roofline to the base:

  • Chimney cap replacement, proper masonry cap built to OBC specifications
  • Chimney crown repair, resurfacing deteriorated concrete crowns
  • Flashing repair and replacement, sealing the chimney-to-roof junction
  • Repointing, replacing deteriorated mortar joints on the chimney body
  • Spalling brick replacement, replacing face-damaged bricks
  • Full chimney reconstruction, tear-down and rebuild from flashing level to cap
  • Flue tile repair, addressing cracked or damaged clay flue liners
  • Bat exclusion, humane bat removal services (bats are protected under Ontario law)
Completed chimney repair Ottawa, new masonry cap installed

Bat Exclusion & Wildlife

Bats are a protected species in Ontario. They cannot be trapped or killed, but they do regularly enter chimneys through gaps in deteriorated mortar or damaged caps. We provide humane bat exclusion services: we seal all secondary entry points and install one-way exit devices that allow bats to leave but not re-enter. Once the colony has vacated (typically late summer or fall), we complete the masonry repairs to permanently seal the chimney.

Serving Ottawa Homeowners Since 2005

We service chimney repairs throughout Ottawa, Kanata, Orleans, Gloucester, Barrhaven, Stittsville, and Rockland. No deposit is required.

Chimney Repair Gallery

Chimney Problems? We Can Help.

Get a free, no-obligation assessment. We'll diagnose the issue and give you a clear picture of what's needed, with no upfront cost.