Roof Moss & Algae Treatment in Whitchurch-Stouffville.
Kill and prevent the black streaks (Gloeocapsa magma) and moss patches that shorten Toronto shingle life. We've serviced thousands of Whitchurch-Stouffville 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.
Moss Treatment you can actually trust
Those black streaks on north-facing Toronto roofs are algae eating limestone filler in the shingle. Left alone they cut shingle life 30%. We apply a shingle-safe treatment that kills the colony, brush off moss patches, then install a zinc strip so rainwater does the maintenance for the next decade.
Every Whitchurch-Stouffville job is quoted in writing before any work begins, and backed by a 5-year workmanship warranty.
What's included
Benefits
- ✓ 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%
Our process
- 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
We serve every Whitchurch-Stouffville neighbourhood
Moss Treatment pricing & options
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WETT Certified
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CSIA Certified
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Professional
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Trusted
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Highly Recommended
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Residential
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Condo
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Heritage
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Century Home
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New Build
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Detached Home
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Semi-Detached
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Townhouse
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Bungalow
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Two-Storey
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Three-Storey
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Cottage
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Wood-Burning
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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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Damaged
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Storm Damage
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Wildlife Removal
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Creosote
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Soot
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Fast
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24/7
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Moss Treatment in Whitchurch-Stouffville — common questions
What causes black streaks on my roof?+
Gloeocapsa magma — a blue-green algae that feeds on limestone in asphalt shingles. Common on north-facing slopes in humid Toronto neighbourhoods.
Other services in Whitchurch-Stouffville
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- WETT & CSIA certified