Roof Flashing Repair in Markham.
Replace and reseal step, counter, chimney, and skylight flashing — the #1 source of roof 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
80% of roof leaks aren't shingle problems, they're flashing problems. We replace step flashing at walls, counter flashing at chimneys, valley flashing, skylight flashing, and plumbing boots. New aluminum or lead, mechanically fastened, sealed with tri-polymer sealant.
Every Markham technician is WETT SITE-Basic certified at minimum, with two inspectors carrying full SITE-Comprehensive credentials.
What's included
Benefits
- ✓ Aluminum or lead — never galvanized-only
- ✓ Mechanical fastening, not caulk-and-pray
- ✓ Tri-polymer sealant, 20-year rated
- ✓ Covers 80% of common leak sources
Our process
- 1. Identify failed flashing type and location
- 2. Remove shingle courses to expose flashing
- 3. Install new step / counter / valley / boot flashing
- 4. Re-shingle over new flashing, seal edges
We serve every Markham neighbourhood
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Flashing Repair in Markham — common questions
What is step flashing?+
Small L-shaped metal pieces woven into each shingle course where the roof meets a wall. When they fail, water enters at every course — usually where the ceiling stain shows up years later.
Other services in Markham
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Service · urgency · contact. A chimney expert replies in under 15 minutes.
- Fixed-price written quote
- No spam, no sales calls
- WETT & CSIA certified