Chimney Flashing Repair in Markham.
Rebuild the step-and-counter flashing where the chimney meets the roof — the #1 source of chimney-related ceiling leaks. Markham homes see hard freeze-thaw cycles every winter — that's the #1 accelerator of chimney damage in the GTA. An annual sweep and inspection is the single cheapest insurance you can buy for your home.
Your quote — in 3 quick taps.
A certified expert calls or texts back in under 15 minutes. No spam. Fixed-price written quote.
Flashing Repair you can actually trust
Failed flashing is the number-one source of chimney leaks in the GTA. We remove old flashing, cut a fresh counter-flashing reglet into the mortar, install new lead or aluminum step flashing woven into the shingles, and seal with UV-stable polyurethane. Full workmanship warranty.
Every Markham technician is WETT SITE-Basic certified at minimum, with two inspectors carrying full SITE-Comprehensive credentials.
What's included
Benefits
- ✓ Stops leaks at the roof-to-chimney intersection
- ✓ Reglet-cut counter flashing (not just caulked over)
- ✓ Compatible with asphalt, cedar, metal, and slate roofs
- ✓ 10-year warranty against leaks
Our process
- 1. Water test and thermal imaging to locate entry
- 2. Old flashing and failed caulking removed
- 3. Reglet cut, step flashing woven with shingles
- 4. Sealed and photo-documented from the roof
We serve every Markham neighbourhood
Flashing Repair pricing & options
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10-Year Warranty
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Spalling Brick
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Rusted Cap
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Cracked Crown
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Moisture
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Estate Home
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Zero-Clearance
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Flashing Repair in Markham — common questions
How do I know if my flashing is the source of my leak?+
Stains directly beneath the chimney chase — especially on the upper-storey ceiling — almost always point to flashing failure. We confirm with a water test.
Do you warranty flashing repairs?+
Yes. Every flashing rebuild carries a 10-year written leak warranty.
Other services in Markham
Book Flashing Repair in Markham
Free written quotes. Same-week booking across the GTA.
Quote in 3 quick taps.
Service · urgency · contact. A chimney expert replies in under 15 minutes.
- Fixed-price written quote
- No spam, no sales calls
- WETT & CSIA certified