Roof Cleaning In St. Thomas | Dutch Wash Co.
Local. Reliable. Done Right.
Professional and Safe Soft Wash Roof Cleaning That Removes Moss, Algae & Black Streaks Utilizing a Pressure Free Cleaning Technique.
Owner-Operated — No Rotating Crews
Safe Soft-Wash Roof Cleaning
Removes Moss, Algae & Black Roof Streaks
Fully Insured Soft–Wash Exterior Cleaning
Professional Roof Cleaning & Moss Removal in St. Thomas, Ontario.
Dutch Wash Co. uses a manufacturer-approved, non-pressure chemical treatment to safely remove moss, lichen, and black streaks without damaging your shingles. Our soft-wash process doesn’t just clean your roof—it extends its lifespan by eliminating the organic growth that eats away at your home’s protection
As a locally owned company serving St. Thomas, Port Stanley, and Aylmer, we focus on reliable service, clear communication, and results homeowners can trust.
Our Soft-Wash Roof Cleaning Process
Roof Inspection & Preparation
We begin by inspecting the roof for moss buildup, algae staining, and areas that require special attention. Surrounding landscaping is pre-soaked and protected before cleaning begins to ensure plants and nearby surfaces are safely cared for.
Soft-Wash Treatment
A professional soft-wash treatment is applied to the roof to eliminate moss, algae, lichen, and black streaks at the root. This low-pressure process safely treats the organic growth without using damaging high-pressure washing.
Treatment Activation
Once applied, the cleaning solution continues working to kill the moss and organic growth. You’ll often notice moss turning white as the treatment begins breaking it down.
Landscaping and surrounding areas are thoroughly rinsed after treatment to protect plants and outdoor surfaces.
Natural Removal Over Time
After treatment, the dead moss and organic growth naturally loosen and wash away over time with rainfall and weather. This gentle process avoids damaging shingles while still restoring the roof’s appearance.
Safe low-pressure soft-wash roof treatment
Kills moss, algae & lichen at the root
No pressure washing that can damage shingles
Helps prevent black streaks from returning quickly
Why Homeowners Trust Our Soft–Wash Roof Cleaning
Roofs in St. Thomas commonly develop moss, algae, and the black streaks you see on many shingles. These organisms don’t just affect appearance — they slowly break down your roof over time.
Our manufacturer approvaed soft-wash roof cleaning process safely treats the surface using specialized cleaning solutions that eliminate organic growth at the root without using damaging pressure washing.
Goodbye Grime.
Hello Shine.
Free Estimates•Fully Insured•5–Star Local Service
Call For a Free Estimate
No Pressure•Just Helpful Local Service•We'll Contact You Within 24 Hours
- 5–Star Rated in St.Thomas
- Locally Owned & Operated
- Fully Insured Exterior Cleaning
Trusted Across St.Thomas & Elgin County
Real Reviews from Local Homeowners
Roof Cleaning FAQs
Common questions homeowners in St. Thomas and Elgin County ask about professional roof cleaning.
Do I need to be home during the cleaning?
No. As long as we have access to the exterior of the property and an outdoor water source, you don’t need to be home. Many homeowners are at work while we complete the treatment.
Will pressure washing damage my roof?
Yes — high pressure can damage shingles, dislodge granules and shorten the life of your roof. That’s why we never pressure wash roofs. Instead, we use a manufacturer recommended professional soft-wash treatment that safely eliminates moss, algae, and organic growth.
Will roof cleaning damage my shingles?
No. Roofs should never be pressure washed. High pressure can remove granules and shorten the lifespan of shingles. Our soft-wash roof treatment safely eliminates moss, algae, and black streaks using low pressure and specialized cleaning solutions designed for roofing materials.
How does soft-wash roof cleaning work?
A specialized cleaning solution is applied to the roof that kills moss, algae, and lichen at the root. The treatment continues working after application, allowing the dead growth to gradually loosen and wash away over time with rain and weather.
Why does the moss turn white after treatment?
When the treatment begins working, moss and organic growth often turn white or lighter in colour. This is a sign the moss has been killed. Over time, the dead growth will naturally break down and wash away with rainfall.
How long does it take for the roof to fully clean up?
Most roofs show noticeable improvement within a few weeks, with continued cleaning as rain naturally removes the dead moss and organic growth. Heavier moss buildup can take longer to fully break down.
Will the treatment harm my plants or landscaping?
No. We take steps to protect your property by pre-soaking surrounding plants and thoroughly rinsing and neutralizing landscaping / vegetation after the treatment to ensure everything remains safe.
Are you insured?
Yes — Dutch Wash Co. is fully insured for residential exterior cleaning, so you can feel confident having us on your property.
How do I get a quote?
Simply click Get a Free Estimate to send a quick form, or text us a photo of your roof. We’ll respond within 24 hours with honest pricing and a free no pressure quote.
Goodbye Grime.
Hello Shine.
Free Estimates•Fully Insured•5–Star Local Service
Call For a Free Estimate
No Pressure•Just Helpful Local Service•We'll Contact You Within 24 Hours
- 5–Star Rated in St.Thomas
- Locally Owned & Operated
- Fully Insured Exterior Cleaning
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The Dutch Difference
Dutch Wash Co. is more than just a name; it’s a commitment to the legendary work ethic and meticulous standards this community expects. When you hire us, you aren’t getting a rotating crew of seasonal workers or under-trained summer help.
Instead, we combine specialized, professional-grade soft-wash technology with an owner-operator’s level of pride to deliver a standard of care that big corporations simply can’t match. It’s a spotless finish that doesn’t just clean—it restores your home’s curb appeal and protects your investment. That’s our personal promise, and we stand behind every square inch.
Locally Owned & Operated
Commercial–Grade Equipment
5-Star Rated Locally
Transparent Pricing – No Surprise Fees