What causes the black streaks on my roof?

Those streaks are algae growth that thrives in London's humid climate, along with moss and lichen. Left untreated, that organic growth roots into the shingles and shortens their lifespan - it's a maintenance issue, not just a cosmetic one.

Why not just pressure wash the moss off the roof?

High pressure strips the granules that make shingles work and can void the manufacturer warranty. Our low-pressure solutions instead neutralize moss, algae, and streaks at the root, so growth doesn't come straight back the way it does after a rinse-only clean.

Soft washing a residential asphalt shingle roof to remove black streaks and moss

Licensed & Insured

London, Ontario & Surrounding Areas

Residential Service

Roof Washing & Moss Removal

Q: Is soft washing safe for asphalt shingle roofs?

Yes - soft washing is the manufacturer-approved way to clean a shingle roof. We never use high-pressure blasting, so the protective granules on your shingles stay intact, and we follow Asphalt Roofing Manufacturers Association guidelines to keep your warranty valid.

Q: Will roof washing hurt my plants and landscaping?

No - plants and surroundings are saturated with water and protected before and after every treatment, and the cleaning solutions we use are biodegradable.

Manufacturer-approved soft washing that removes black streaks, moss, and algae without ever blasting your shingles.

Your roof is one of the most expensive components of your home, and the black streaks, moss, and algae that build up in London's humid climate are more than an eyesore. Left untreated, that organic growth roots into shingles and shortens their lifespan.

We never use high-pressure blasting on a roof. Our low-pressure soft-wash method uses biodegradable solutions to kill growth at the source while protecting the granules that keep your shingles working, so your roof reflects heat instead of absorbing it.

Soft-Wash Only

Zero high-pressure blasting, so the protective granules on your shingles stay intact.

Kills Growth at the Root

Biodegradable solutions neutralize moss, algae, and black streaks rather than just rinsing them.

Landscaping Protection

Plants and surroundings are saturated and protected before and after every treatment.

Warranty-Safe Process

We follow Asphalt Roofing Manufacturers Association guidelines to keep your warranty intact.

Serving London, Byron, Oakridge, Summerside, Dorchester, Belmont, St. Thomas, and Strathroy.

Get a Free Quote 548-788-9336

Roof Washing at a Glance

How we do it: Low-pressure soft wash only - never high-pressure blasting - following Asphalt Roofing Manufacturers Association guidelines.
Service area: Serving London, Byron, Oakridge, Summerside, Dorchester, Belmont, St. Thomas, and Strathroy.
Pricing: Free, transparent quotes with no hidden fees. Every price is confirmed before work begins.
Insurance & licensing: Fully insured with liability coverage, WSIB compliant, and licensed to operate in Ontario.
Guarantee: 100% satisfaction guarantee - if anything is not right, we return within 48 hours at no extra cost.