The Best Roof Moss & Algae Treatment Company in Grimsby
Kill and prevent the black streaks (Gloeocapsa magma) and moss patches that shorten Toronto shingle life. 500+ five-star reviews from Grimsby homeowners.
Your quote — in 3 quick taps.
A certified expert calls or texts back in under 15 minutes. No spam. Fixed-price written quote.
Best — Moss Treatment in Grimsby
22 years of continuous operation, 40,000+ GTA homes serviced, no BBB complaints on file.
Fixed-price quotes, 5-year workmanship warranty, and a $5M liability policy behind every visit.
Master-level CSIA and WETT SITE-Comprehensive credentials on every crew leader.
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
Best FAQ — Grimsby
Do you handle insurance paperwork?+
Yes. We photograph, document, and email inspection reports in the format Ontario insurers accept.
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.
Do you work weekends?+
Saturday slots book out weeks in advance. Sunday is emergency-only. Book early for weekends.
Is your team certified?+
Every technician is WETT SITE-Basic certified at minimum, with lead inspectors carrying SITE-Comprehensive credentials plus CSIA training.
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Book best — Moss Treatment in Grimsby
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