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Roof Treatment · Specialty Service · Rochester Hills, MI

Roof Treatment
Rochester Hills

Concentrated soft wash solution with specialized surfactants eliminates black algae streaks and moss from your roof — no scraping, no pressure washing, no stepping on your shingles. Ever.

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🏚️ Specialty Service
🛡️ Shingle Safe — No Pressure
Roof treatment Rochester Hills MI - Tsunami Johnny's Pressure Washing
Specialty Service
Roof Treatment · Rochester Hills
🚫
Zero
Pressure on Shingles
👣
Never
Step on Your Roof
🔬
Kills
Algae at the Root
🏚️
Extends
Roof Life
Why Roof Treatment Matters
Those Black Streaks Are
Destroying Your Roof

Most Rochester Hills homeowners think the black streaks on their roof are just dirt. They’re not — and ignoring them is expensive.

The black streaks you see running down your roof shingles are caused by Gloeocapsa magma — a type of algae that’s spreading across Michigan roofs at an accelerating rate.

This algae feeds on the limestone filler in asphalt shingles. As it eats through the granule layer it exposes the underlying asphalt to UV damage, moisture retention and accelerated breakdown. A roof that should last 25–30 years can lose a decade of life from untreated algae growth.

Michigan’s conditions make Rochester Hills roofs especially vulnerable: humid summers, frequent spring rain, and mature tree canopy shading north-facing and west-facing slopes where algae thrives. Once established, it spreads to adjacent shingles and eventually covers the entire roof.

Our concentrated soft wash solution with specialized surfactants kills the algae colony at the root — not just removes visible staining. The roof surface is treated and results last significantly longer than any scraping or pressure-based method.

10yr
Roof Life Lost to Untreated Algae
Algae growth can shorten the life of asphalt shingles by up to a decade through granule loss and moisture damage.
$12k+
Average Roof Replacement Cost in Michigan
A professional roof treatment costs a fraction of early replacement — protecting your investment for years.
0
Pressure Applied to Your Shingles
Our solution does all the work. No scraping, no brushing, no pressure washing that strips granules and voids warranties.
The Right Way vs The Wrong Way
Why Other Methods
Damage Your Roof

Not all roof cleaning is equal. Here’s what separates a professional treatment from methods that void your warranty.

⚠️
Wrong Methods
  • Pressure washing shingles — strips granules, voids manufacturer warranty
  • Scraping or scrubbing — physical abrasion damages shingle surface
  • Walking on the roof to clean — foot traffic breaks shingle bonds and causes hidden damage
  • Bleach-only solutions without surfactants — runs off too fast to kill algae at the root
  • DIY power washing — one wrong angle and you’re looking at a new roof
The Tsunami Johnny’s Method
  • Concentrated soft wash solution with specialized surfactants — clings to the surface and kills algae at the root
  • Zero pressure applied to shingles — solution does all the work
  • Applied from the gutterline using a ladder — we never step on your roof
  • Manufacturer-approved method — safe for all asphalt shingle brands
  • Results last significantly longer than any scraping or pressure method
Our Process
How We Treat
Your Roof

Simple, safe, effective. Here’s exactly what happens on every roof treatment job.

01
Photo Quote — No Visit Needed
Send us photos of your roof and we’ll quote you same day. We can see the extent of algae and moss growth from photos and give you an accurate price without scheduling an in-person visit.
02
Protect Surrounding Areas
Before we begin, we wet down all surrounding landscaping, plants and grass. Our solution is biodegradable but we take every precaution to protect your yard.
03
Apply Concentrated Solution From the Gutterline
We access the gutterline using a ladder and apply our concentrated soft wash solution with specialized surfactants across the entire roof surface. The surfactants make the solution cling to shingles instead of running off — giving it time to penetrate and kill the algae colony. We never step on your roof.
04
Dwell & Treatment Time
The solution dwells on the roof surface and kills the algae and moss at the root. This is what separates a true treatment from a surface clean — the active ingredient works through the staining to eliminate the colony, not just hide it.
05
Rinse & Final Inspection
A thorough low-pressure rinse clears the roof and surrounding areas. We do a final walkthrough to confirm full coverage and clean up before we leave. Your roof is treated, protected and ready for Michigan weather.
Why Tsunami Johnny’s
Roof Treatment Done
the Right Way

Roof treatment is a specialty service — it requires the right solution, the right technique and someone who knows exactly what they’re doing. That’s us.

Concentrated Solution + Specialized Surfactants
Not just bleach and water — our concentrated formula with surfactants clings to shingles and kills algae at the root for lasting results.
We Never Step on Your Roof
Applied entirely from the gutterline. No foot traffic on your shingles, no liability risk, no hidden damage from someone walking your roof.
Zero Pressure on Shingles
No pressure washing on the roof — ever. Our method is manufacturer-approved and won’t void your roofing warranty.
Same-Day Photo Quote
Send us photos and get a detailed quote same day. No one needs to come out just to give you a price.
See Black Streaks
on Your Roof?
Don’t wait — algae spreads fast on Michigan roofs. Send us photos and we’ll quote your roof treatment same day.
Get a Free Quote →
— or call us directly —
📞 586-873-1117
Monday – Friday · 8am – 8pm
FAQ
Roof Treatment Questions
Answered
Why does my roof have black streaks in Michigan?
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The black streaks on your roof are caused by Gloeocapsa magma — an algae that feeds on the limestone filler in asphalt shingles. Michigan’s humid summers, frequent rain and mature tree coverage in Rochester Hills neighborhoods create ideal conditions for it to spread. Left untreated, it retains moisture on the roof surface, strips granules and significantly shortens shingle life.
How do you treat a roof — do you pressure wash it?
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No — we never pressure wash a roof. High-pressure washing strips granules from shingles and voids most roofing warranties. We apply a concentrated soft wash solution with specialized surfactants from the gutterline using a ladder. The solution kills the algae and moss at the root without any physical abrasion — the only manufacturer-approved method for asphalt shingles.
Do you walk on the roof?
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Never. We access the gutterline using a ladder and apply our solution from the edge — we don’t set foot on your roof. This protects your shingles from foot traffic damage, protects our crew, and means there’s zero risk of breaking shingle bonds or causing damage that isn’t visible from the ground.
How much does roof treatment cost in Rochester Hills, MI?
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Roof treatment in Rochester Hills typically costs between $300 and $700 depending on the size and pitch of the roof and the extent of algae or moss coverage. We provide free photo quotes — send us photos of your roof and we’ll give you an accurate price same day, no visit needed.
Will roof treatment void my shingle warranty?
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No — our soft wash treatment method is manufacturer-approved by major shingle brands including GAF and CertainTeed. What voids a warranty is pressure washing, scraping or physical abrasion on the shingle surface. Our solution-based approach applies zero pressure to the roof and won’t affect your warranty coverage.
How long does roof treatment last?
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Results vary based on sun exposure, tree coverage and weather conditions but most Rochester Hills homeowners see results lasting 2 to 5 years. Roofs with heavy shade from mature trees may see regrowth sooner. Because our solution kills the algae colony rather than just removing surface staining, results last significantly longer than any scraping or pressure-based approach.