Cost to Replace Roof Moss & Algae Treatment in Richmond Hill
Kill and prevent the black streaks (Gloeocapsa magma) and moss patches that shorten Toronto shingle life. What full replacement actually runs in Richmond Hill this year.
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Replacement Cost — Moss Treatment in Richmond Hill
Repairing usually wins under a third of replacement cost; past that, replacement is the cheaper decade.
Replacement pricing in Richmond Hill 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.
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 — Richmond Hill
Do you carry insurance?+
$5M general liability plus WSIB coverage on every crew. Both certificates are emailed before we set foot on site.
Do you work weekends?+
Saturday slots book out weeks in advance. Sunday is emergency-only. Book early for weekends.
Can I finance the work?+
Yes. 0% promo financing is available on qualifying projects — approvals in minutes with no credit pull.
Do you offer a warranty?+
Every job carries a 5-year workmanship warranty. Parts carry the manufacturer's warranty on top.
Do you charge for the quote?+
No. Written quotes are free, no obligation, no hard sell — even for major masonry work.
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Book replacement cost — Moss Treatment in Richmond Hill
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