Cost to Replace Roof Moss & Algae Treatment in Markham
Kill and prevent the black streaks (Gloeocapsa magma) and moss patches that shorten Toronto shingle life. Replacement pricing for Markham homes — parts, labour, and disposal.
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Replacement Cost — Moss Treatment in Markham
Replacement pricing in Markham is driven by material grade, access, and how much of the surrounding assembly has to come apart.
Every replacement quote itemises parts, labour, disposal, and taxes before you commit to anything.
Repairing usually wins under a third of replacement cost; past that, replacement is the cheaper decade.
What's included
- ✓ Kills the algae at the root
- ✓ Removes moss patches by hand — no scraping
- ✓ Zinc strip prevents 8–10 years of regrowth
- ✓ Extends shingle life by ~30%
- 1. Apply shingle-safe algaecide, dwell 20 min
- 2. Hand-brush any moss patches
- 3. Rinse with low-pressure fan spray
- 4. Install continuous zinc strip at ridge
Replacement Cost FAQ — Markham
Is your team certified?+
Every technician is WETT SITE-Basic certified at minimum, with lead inspectors carrying SITE-Comprehensive credentials plus CSIA training.
Do you carry insurance?+
$5M general liability plus WSIB coverage on every crew. Both certificates are emailed before we set foot on site.
How fast can you book me in?+
Same-week is standard across the GTA. Same-day is available if you book before 11 AM most weekdays.
Do you work weekends?+
Saturday slots book out weeks in advance. Sunday is emergency-only. Book early for weekends.
Do you offer a warranty?+
Every job carries a 5-year workmanship warranty. Parts carry the manufacturer's warranty on top.
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Book replacement cost — Moss Treatment 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