Imperial Cleaning
Roof Washing by Imperial Cleaning in Sault Ste. Marie, Ontario
Roof Washing

Mouldy roof?
We can fix that.

Professional soft washing for roof stains, algae, moss and organic buildup.

Call (705) 257-5141
★★★★★5.0 on Google · Fully Insured · WSIB Covered
Maintenance Membership

Put this on autopilot.

Priority scheduling, member-only pricing and reminders two weeks and two days before every visit.

Most Popular
Roof Washing

Annual Roof Wash

1 cleaning per year
Member discount
$200 off each visit
  • 30-day spot-free guarantee
  • Set & forget priority scheduling
  • Free roof inspection and photo report after each visit

Final eligibility and service details are confirmed during quoting.

Compare all plans on the Maintenance Plans page.

Why it matters

Cleaner surfaces.
Longer-lasting results.

Your roof is never pressure washed. We soft wash from the ridge downward with a low-pressure application, protect your landscaping and gutters, and let the solution do the work — the method asphalt shingle manufacturers actually support.

Never Pressure Washed

Soft wash only — the manufacturer-supported method for asphalt shingles.

Ridge-Down Application

We start at the peak and work down so cleaner and dirty water flow the same direction the roof was built to shed.

Landscaping Protected

Plants, gardens and downspouts are covered and rinsed as part of the process.

30-Day Touch-Up

If anything didn't release with the first pass, we come back within 30 days.

Imperial Cleaning roof washing in Sault Ste. Marie
Free Quote

Book this service

Tell us about your property and we'll get back to you with a free, no-obligation quote.

Our Process

A structured, detail-driven clean.

01

Inspect & Protect

Confirm shingle type and severity. Cover and pre-rinse landscaping.

02

Ridge-Down Soft Wash

Low-pressure application from the peak to the eaves.

03

Dwell Time

Solution breaks down black streaks (same-day fade) and moss (releases 2–4 weeks).

04

Rinse & Walkthrough

Gutters flushed of debris, landscaping rinsed, post-service walkthrough with photos.

Real Results

Before & after.

Roof Washing — afterRoof Washing — before
Before
After
Roof Washing

Representative before and after project results — soft-wash treatment removes moss and streaks without pressure washing shingles.

What clients say
★★★★★

"The white trim, soffit and fascia of our home look so much newer and so much cleaner! Colby and his team were excellent. We were so impressed with their professional, personable service and their pride in their work. Would highly recommend."

Adriano Dicerbo
★★★★★

"Our experience as well as my parents' experience with both Colby and Christian was excellent. Our windows look great and the price was very reasonable. They are a trustworthy and reliable business. I highly recommend."

Lori Matthews
FAQ

Common questions

Why should roofs never be pressure washed?+

High pressure strips shingle granules and voids most manufacturer warranties. Soft washing is the ARMA-recommended method.

How long does moss take to release?+

Black streaks often fade the same day. Moss and lichen naturally release over two to four weeks with no shingle-damaging scrubbing.

Will the treatment harm landscaping?+

No. We pre-rinse and post-rinse plants and gutters and monitor sensitive greenery throughout the visit.

What causes black roof streaks?+

A hardy algae (Gloeocapsa magma) that feeds on limestone filler in shingles. Our treatment kills it at the root, not just at the surface.

Is a touch-up included?+

Membership visits include a follow-up assessment — if any regrowth appears in the covered period we address it.

Get in touch

Ready for a cleaner property?

Call (705) 257-5141
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