Chimney Crown Replacement in Mississauga.
Full chimney crown rebuild — the concrete cap that seals the top of your chimney against water, freeze-thaw damage, and structural decay. Because Mississauga building stock spans everything from century brick to 2020s builds, we bring the tools and materials for every era of chimney construction — no return trips, no surprises.
Your quote — in 3 quick taps.
A certified expert calls or texts back in under 15 minutes. No spam. Fixed-price written quote.
Crown Replacement you can actually trust
The chimney crown is the sloped concrete slab on top of your chimney. When it cracks or spalls, water pours straight into your masonry and flue — accelerating brick decay, rusting the damper, and eventually causing a $10K+ rebuild. We remove the failed crown and pour a properly reinforced, drip-edged replacement rated for Ontario freeze-thaw cycles.
We carry $5M in liability insurance and WSIB coverage — verifiable before we set foot on your Mississauga property.
What's included
Benefits
- ✓ Reinforced pour with steel rebar and expansion joint
- ✓ Proper 2-inch overhang with drip edge
- ✓ Type-S mortar bond breaker to prevent flue-tile cracking
- ✓ Waterproof siloxane sealer included
- ✓ 5-year workmanship warranty
Our process
- 1. Camera inspection and photo assessment of existing crown
- 2. Fixed-price written quote — no time-and-materials
- 3. Remove failed crown down to the last course of brick
- 4. Form, rebar, and pour a properly overhanging replacement crown
- 5. Cure, seal with siloxane, and photo-document warranty
We serve every Mississauga neighbourhood
Crown Replacement pricing & options
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Crown Replacement in Mississauga — common questions
How much does chimney crown replacement cost in Toronto?+
A full crown rebuild in the GTA typically costs $900–$2,200 in 2026, depending on chimney size and access. A surface-only crown seal (for hairline cracks) starts at $350. We quote fixed-price after a free inspection.
Crown seal vs. full crown replacement — which do I need?+
A crown seal is a surface-applied elastomeric coat and buys 5–10 years on a structurally sound crown with hairline cracks. Full replacement is required when the crown has structural cracks, spalling, missing overhang, or no drip edge. Our free inspection tells you which one your chimney actually needs.
How long does the crown replacement take?+
Most single-chimney crown rebuilds are done in one day (4–8 hours on site), plus 24–48 hours cure time before your first fire.
Is it covered by home insurance?+
Sudden damage (a storm, a tree strike) is typically covered. Wear-and-tear failure is not. We provide detailed cause-of-failure documentation with every job to support your claim.
What material do you use?+
A properly proportioned Portland-cement crown mix with steel rebar reinforcement, a 2-inch overhang with drip edge, and a Type-S mortar bond breaker between the crown and flue tile. Finished with a 10-year siloxane sealer.
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- Fixed-price written quote
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- WETT & CSIA certified