Who Does Roof Moss & Algae Treatment in Markham?
Kill and prevent the black streaks (Gloeocapsa magma) and moss patches that shorten Toronto shingle life. Not every contractor in Markham is licensed for this. Here's the test.
Your quote — in 3 quick taps.
A certified expert calls or texts back in under 15 minutes. No spam. Fixed-price written quote.
Who Does It — Moss Treatment in Markham
General handymen quote this work constantly. The problem shows up when your insurer asks for documentation nobody can produce.
Ask for the certificate numbers, the WSIB clearance, and two Markham references from the last 90 days. Anyone hesitating is telling you something.
In Ontario this work belongs to a WETT-certified contractor carrying at least $2M liability — $5M is the standard serious firms hold.
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
Who Does It FAQ — Markham
Do you handle insurance paperwork?+
Yes. We photograph, document, and email inspection reports in the format Ontario insurers accept.
Do you charge for the quote?+
No. Written quotes are free, no obligation, no hard sell — even for major masonry work.
Do you offer a warranty?+
Every job carries a 5-year workmanship warranty. Parts carry the manufacturer's warranty on top.
Can I get a quote without a site visit?+
For most standard services, yes — three photos and your postal code is enough for a firm written number.
Do you work weekends?+
Saturday slots book out weeks in advance. Sunday is emergency-only. Book early for weekends.
Who Does It in nearby cities
Also serving Markham
Book who does it — Moss Treatment in Markham
Free written quotes. Same-week booking across the GTA.
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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