Roof Flashing Repair in Oshawa.
Replace and reseal step, counter, chimney, and skylight flashing — the #1 source of roof leaks. We've serviced thousands of Oshawa chimneys since 2003. Our routing means the closest crew to your door is usually less than 20 minutes away.
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 Oshawa job is quoted in writing before any work begins, and backed by a 5-year workmanship warranty.
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 Oshawa neighbourhood
Flashing Repair pricing & options
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Wood Stove
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Gas Fireplace
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Gas Insert
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Pellet Stove
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Oil Furnace
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Coal
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Masonry Fireplace
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Prefab Fireplace
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Leaking Chimney
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Cracked Chimney
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Smoking Fireplace
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Downdraft
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Blocked
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Old Chimney
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Flashing Repair in Oshawa — 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 Oshawa
Book Flashing Repair in Oshawa
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