St. Catharines 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 St. Catharines across 7 verified reviews

Call for a free quote — 905-963-9059

Request a Quote or

Join thousands of satisfied customers who have handed off their to-do lists to the pros. Get your instant estimate now and experience the Gorilla Property Services difference.

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

    Curb appeal might start at the ground level, but it stretches to the sky. Even a bit of neglect can leave roofs looking cluttered and ugly. Moisture runs rampant all across the Niagara region and that means moss and invasive growth. With moss growing and spreading every day, regular care and maintenance is more important than ever.

    Don’t let your roofing be overrun when there are Gorillas in your area, waiting to swing into action. Professional St. Catharines roof cleaning and moss removal gets rid of the bad while showcasing the good. Call us today for a free quote and to see the difference a professional cleaning process can make.

    What to Know About Your Roof

    A roof is your first, last and best line of defence against the elements. Despite how important it might be, roofing is often neglected. With every day that goes by, there is debris falling and collecting on roof surfaces. This not only looks terrible but can lead to large-scale issues after a while. More than staying put, debris is carried by wind and rain, often ending up in eavestrough/gutters.

    Leaves, branches, needles, seed pods and pinecones are all common denominators in a cluttered roof. On their own, these materials aren’t threatening but in a thick blanket, each piece holds onto moisture. Whether you have a peaked or flat roof, excessive moisture is not a good thing! A damp and covered environment is the perfect place for moss to take hold and spread.

    No matter the type of shingle, roofs are susceptible to damage caused by moss. Whether this invasive growth latches onto hard surfaces like concrete, or weaves under shingling, softening decking and causing damage. Leaks, flooding, rot and even infestations are all consequences of a lack in maintenance.

    Choosing regular roof cleaning services means avoiding the high cost and labour involved in roof replacement or repair. Any chore that involves heights is easy to put off, but gutter cleaning, window cleaning and roof care can all be left up to our highly trained Gorillas.

    Gorilla Property Services: Not Your Average Cleaning Company

    Taking a Do-It-Yourself approach to roof cleaning is an almost daily occurrence for property owners. Spotting a bit of moss on homes or commercial properties might mean hauling a power tool onto roof surfaces and pressure washing. This might seem like a good idea, but it can cause water damage when done around weakened materials.

    Instead of relying on high-pressure sprays and wire brushes; a basic moss killer or chlorine bleach, our team of experts take a more technical approach to getting the best results for your space. Assessment and inspection are the first steps to a great result. Once any problem areas are identified, they are treated according to their condition and needs.

    From here, any surface debris is brushed away and newly exposed areas are inspected again to assess any and all moss growth. Soft washing uses low-flow power tools to strip away buildup and growth without the threat of unnecessary damage. Instead of leaving a mess behind, materials and organics are packed up and carted away.

    Each member of the Gorilla team is fully insured throughout services. If your roof could use a bit of attention, call today for a free estimate.

    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 do gutters and roof on the same visit?

    Pairing them in one visit is the efficient choice. With the gutters cleared first, the downspouts can carry away the debris that roof cleaning loosens, so you avoid clogs and a backed-up mess. One crew handles both, which saves the setup and travel of a separate appointment.

    Do you clean office building roofs?

    Office roofs differ from homes: usually flat, membrane-covered, and crowded with HVAC units and drains. We adapt the soft-wash for those surfaces, work around rooftop equipment, and schedule evenings or weekends so the building’s tenants never notice the crew was there.

    How long does the chemistry sit on the roof?

    On St. Catharines jobs, the chemistry sits for 10 to 30 minutes, longer where growth is heavier. That dwell time lets the soft-wash solution penetrate into the algae and moss roots so it kills the growth at its source.

    How often do commercial flat roofs need cleaning?

    Frequency depends on debris load, not the calendar. The real drivers are nearby trees, surrounding buildings, and exhaust that deposits grease or grime. A roof in the open may be fine once a year, while one collecting heavy debris needs quarterly attention to protect drainage.

    How do you assess shingle granule loss?

    Granules in the gutter are the clearest evidence. The protective surface of an asphalt shingle slowly sheds, so a build-up downstream tells us how far along the wear is. Combined with a look at the shingles themselves, it shows whether the loss is normal aging or something faster.

    Can roof cleaning help my home appraise higher?

    Indirectly, yes. Roof cleaning does not add a set dollar figure to an appraisal, but appraisers note overall property condition, and a clean roof signals that the home has been maintained. A clean exterior supports the impression of a well-kept property.

    Do you inspect roofs after storms?

    Yes, post-storm roof inspection is offered as a separate service. It is a damage assessment meant to support repair planning, so we document visible issues like lifted shingles, impact marks, and debris damage that an owner or roofer can act on.

    How do I install zinc strips?

    Strip installation is roofing work, not a DIY job for most homeowners. It means safe roof access and proper fastening at the ridge so the strips sit right and last. We can coordinate it alongside a cleaning or refer you to a roofing contractor.

    How do I know my roof needs cleaning?

    For St. Catharines homes, the clearest signs are black streaks, green or brown moss patches, or lichen on the shingles. Darker areas that stay damp in the shade point the same way. Any of these means your roof is ready for a cleaning.

    canadian franchise association international franchise association

    Each Gorilla Office is Independently Owned and Operated

    Book Online