Ottawa Roof Cleaning & Moss Removal

Extend the life of your roof with eco-friendly moss and debris removal that protects shingles, prevents costly leaks, and keeps your home looking its best season after season.

  • Always wear fall arrest gear
  • Eco friendly solutions & non-abrasive removal
  • All rooftops and valleys to be cleared of branches, leaves and debris
  • Before and After photos

5.0 in Ottawa across 131 verified reviews

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    Brands the Gorilla Property Services network has worked with across Canada and the U.S.

    If your roof needs a good cleaning but you are not looking forward to climbing skyward, our Gorillas can help! Put your anxieties to bed without losing quality service with our Ottawa roof cleaning and moss removal. Keep your feet on the ground while our Gorillas go to work, keeping your roof clean and moss-free.

    Avoiding Slippery Slopes

    Getting clutter off of the surface of your roof might be the main reason for calling in a professional service but professional cleaning services do so much more. Organic clutter can lead to degraded materials and the spread of moss and invasive plant growth. Just climbing up onto your roof seems easy enough but it is a chore all on its own. Without the proper experience, there is nothing standing between you and the ground below. That is a scary thought! Aside from the heights in general, a cluttered roof can be slippery on its own. Moisture, although nice in a sauna, and good for your garden, can lead to the spreading of moss and making surfaces increasingly slippery. Save yourself the hassle (and a trip to the hospital!) with our Gorillas.

    Over time, moss thickens and grows, creating a dangerous environment for property owners and causing damage to construction materials. Killing moss is not as simple as spraying weed killer or scraping it from surfaces. In fact, a harsh approach or wire brush can scrape away protective layers and lead to water damage or leaks. Keep your shingles and decking in good condition by trusting the pros for your moss removal.

    Ottawa Roof Cleaning & Moss Removal: Safety First, Results Always

    Invasive growth can significantly shorten the lifespan of construction materials, so our Gorillas waste no time in getting to work. When it comes to property maintenance, working safely needs to be a top priority. That is why our Gorilla technicians operate using the proper stand-offs before ever laying a foot on the surface of your roof. Surface clutter is then cleared away in order to give off a more complete view of the condition of your roof. Gorilla technicians see several roofs in a day and that is what makes it possible to assess and address every aspect. Whether it is the good, the bad or the ugly, our Gorillas know what to do. However, no one cares more about your property than you do. That is why ‘before and after’ photos are always a part of our services. Nothing happens without your say-so!

    Getting rid of clutter can be a pain but ditching moss is a more complicated procedure. Scraping it off with wire brushes or other tools can strip away the softened material underneath. Protect your property all while giving it the updated look that it deserves with a bit of help from a Gorilla.

    How It Works

    Three steps to a spotless property

    No phone tag. No mystery pricing. Just a quick quote, a confirmed crew, and a job that’s done right.

    1. Get your quote

      Tell us what your property needs through the hero form, the Book Online modal, or a quick phone call.

    2. We schedule

      A local Gorilla crew picks the next available slot — usually within days, faster in priority seasons.

    3. We show up

      Crew arrives in branded vehicles, full kit, on time. We clean up after ourselves and email you the receipt.

    Ready when you are

    Property maintenance, handled.

    Free, no-obligation quote. No surprises, no hidden fees.

    Common questions

    Roof Cleaning — answered

    Should I see the results getting better over time?

    For Ottawa customers, yes, visible improvement continues for one to two weeks after cleaning. The chemistry keeps killing any remaining algae and moss, and rain washes the dead material away, so the roof keeps looking cleaner over that period.

    How much does roof cleaning extend roof life?

    The realistic gain is 5 to 10 years, but the bigger story is what neglect costs. Unchecked moss can knock a 25-year roof down to roughly 15. Cleaning recovers most of that gap, which makes it far cheaper than the early replacement it helps you avoid.

    Can I just spray bleach on my roof?

    In Ottawa, spraying straight bleach on your roof damages both the shingles and the surrounding landscape. Soft-wash cleaning uses properly diluted chemistry with surfactants and a controlled dwell time, which is why it removes algae without the harm undiluted bleach causes.

    How is the chemistry applied to roofs?

    Low-pressure spray is the key distinction. High-pressure washing strips the protective granules off asphalt shingles and can force water under them, so roofs get a soft-wash instead: just enough pressure to apply the chemistry evenly and let it, not force, do the cleaning.

    Do you use pressure washing on roofs?

    Pressure washing has no place on a roof. It might blast off the visible growth, but it also strips the protective granule layer and shortens shingle life. Soft washing is the only method we consider safe, and it actually lasts longer too.

    Can you clean asphalt shingle roofs?

    Yes, asphalt shingle roofs are the most common type we clean and our standard soft-wash work. Most algae and moss problems show up on asphalt, and low-pressure chemistry clears them without disturbing the granules or shortening the shingle’s life.

    Do you protect siding during roof cleaning?

    Yes, we protect siding during roof cleaning. Crews pre-rinse the siding with water before the chemistry is applied, so any overspray that reaches it is already diluted and rinses off cleanly. This is standard protocol on every roof job, not an add-on.

    Do you guarantee your work?

    For Ottawa customers, a workmanship guarantee applies to all roof cleaning. If the results do not match what was agreed within a reasonable period, we return at no charge to put it right. The guarantee stands behind the quality of the work we deliver.

    Do you work weekends for roof cleaning?

    Weekend service is available, which suits homeowners who want to be on site while the crew works. Saturday runs on a full schedule and Sunday on lighter crews. Roof cleaning is weather-dependent, so a dry mid-week slot can sometimes be the faster booking.

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