Solar Panel Cleaning in Hamilton, Dundas, Burlington & Oakville
Serving Hamilton, Dundas, Burlington, Oakville, Stoney Creek & surrounding Ontario communities
Overview
Solar panels are one of the most significant investments a homeowner or business can make — and like any investment, they need proper maintenance to deliver their full return. Dirt, pollen, bird droppings, tree sap, and Ontario's seasonal grime can reduce your solar system's energy output by 15–25% or more. BTG Exteriors provides professional solar panel cleaning services throughout Hamilton, Dundas, Burlington, Oakville, Stoney Creek, and surrounding communities using purified, deionised water and a gentle soft brush method. Our process removes all surface contamination without scratching your panels or voiding your manufacturer's warranty. Whether you have a residential rooftop system or a commercial solar array, we restore your panels to peak efficiency safely, effectively, and completely chemical-free.
Benefits of Professional Solar Panel Cleaning
Restore Lost Energy Output
Research consistently shows that dirty solar panels lose 15–25% of their energy production. Pollen, bird droppings, and urban dust are the primary culprits in Ontario. A professional clean typically restores full rated output within hours of the service — many clients report a noticeable improvement in their inverter app readings the same day.
Purified Water — Spot-Free Finish
We use purified, deionised water with a mineral content near zero (well below the ≤300 PPM recommended by Canadian Solar and other major manufacturers). Purified water evaporates without leaving mineral deposits or water spots on your anti-reflective coating — the same professional-grade method used by solar installers across Ontario.
Soft Brush — No Scratching, No Micro-Cracks
Our gentle soft brush technique removes pollen, bird droppings, tree sap, and grime without abrasion. We never use pressure washers, abrasive pads, rotating brushes, or steel wool — all of which can cause micro-cracks in panel glass or damage anti-reflective coatings and frame seals.
Warranty-Safe Process
Most panel manufacturers — including Canadian Solar, REC, Qcells, and LG — require non-abrasive cleaning with low-mineral water. Our process meets or exceeds these requirements. We also avoid all chemicals flagged by manufacturers: no ammonia, no acids, no alkali, no degreasers, and no window cleaners. Your warranty stays intact.
Residential & Commercial
We clean all system sizes — from small residential rooftop arrays to large commercial installations. All roof types, all panel brands, all mounting configurations. For commercial clients, we can schedule during off-peak hours to minimise any disruption to operations.
Eco-Friendly, Chemical-Free
Our purified water method is 100% chemical-free. No detergents, no solvents, no runoff risk to your garden, landscaping, or stormwater system. Safe for your family, pets, and the environment — and fully aligned with Ontario's environmental standards.
Our Solar Panel Cleaning Process
System & Safety Assessment
We assess your solar array layout, roof type, panel brand, and access considerations before beginning. We inspect panels for cracks, loose wiring, or damage — wet or damaged panels can present a shock hazard, so this step is non-negotiable. We confirm your system is safe to clean and note any panels requiring extra care.
Timing — Cool Panels Only
We schedule cleaning for early morning, evening, or overcast days when panels are not hot. This is a critical safety and quality step: cleaning hot panels with cool water causes thermal shock, which can crack panel glass or damage frame seals. We never clean panels in direct midday sun.
Dry Debris Removal
We gently brush off loose debris — leaves, pollen clusters, and dry bird droppings — before introducing water. This prevents scratching from dragging dry particles across the glass surface during the wet cleaning phase.
Purified Water Application
We apply purified, deionised water through a soft brush water-fed pole system, gently agitating the panel surface to loosen bonded grime, pollen, and organic residue. The water-fed pole allows us to work safely from the ground or with proper fall protection — we never stand or walk on panels.
Thorough Rinse
We rinse each panel thoroughly with purified water, flushing all loosened contamination away from the panel surface and frame channels. Low-pressure application only — never a pressure washer, which can crack glass or force water into junction boxes.
Spot-Free Air Dry & Final Inspection
Because we use purified water with near-zero mineral content, panels air-dry without water spots or mineral deposits. We finish with a visual inspection of each panel, checking for cracks, damaged frames, or wiring issues, and report any concerns so you can follow up with your installer.
Why Professional Solar Panel Cleaning Is Better Than DIY
Solar panels on residential rooftops present real fall hazards, and improper cleaning can void your manufacturer's warranty or permanently damage your anti-reflective coating. Using tap water leaves mineral deposits that reduce light transmission over time. Using pressure washers can crack panel glass, damage frame seals, or force water into junction boxes. Using the wrong chemicals — ammonia, acids, degreasers, or standard window cleaners — can etch the glass surface or void coverage under your performance warranty. BTG Exteriors uses the same purified water and soft brush method recommended by panel manufacturers including Canadian Solar, REC, and Qcells — applied safely from the ground or with proper Working at Heights fall protection equipment. The result is a genuinely clean panel that performs at its rated capacity, with no warranty risk and no safety shortcuts. For roof-mounted systems especially, professional service is the safest and most effective option available.
Why Homeowners Choose BTG Exteriors
BTG Exteriors has been providing professional exterior cleaning services throughout the Hamilton region since 2019. Natasha Yokom brings the same obsessive attention to detail to solar panel cleaning that she applies to every service — treating your investment as if it were her own. We are fully insured, Working at Heights certified, and use only eco-friendly, chemical-free purified water methods that are safe for your panels, your roof, and your family. We serve homeowners and businesses throughout Dundas, Hamilton, Burlington, Oakville, Stoney Creek, Ancaster, and surrounding communities. Many clients combine solar panel cleaning with window cleaning or house washing for a complete exterior refresh in a single visit. Contact BTG Exteriors today for a free, no-obligation quote — we typically respond within 2 hours.
Our Eco-Friendly Commitment
Our solar panel cleaning process is 100% chemical-free. We use only purified, deionised water — no detergents, no solvents, no biodegradable soaps. This means zero chemical runoff onto your roof, landscaping, or garden, and no residue left on your panels that could attract future soiling. Our approach aligns with the eco-friendly focus that many Ontario homeowners and businesses expect from a professional exterior cleaning service.
Get a Free Solar Panel Cleaning Quote
Why Choose BTG Exteriors?
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Many homeowners schedule window cleaning at the same time as driveway pressure washing or house washing for a complete exterior refresh.
Got Questions?
Solar Panel Cleaning FAQs
What Our Clients Say
Real Results, Real Reviews
5-Star Rated on Google
"The appointment process was easy. Netasha was great to work with! Very satisfied with the results of my window/siding/eaves cleaning work."
Kathy Berglund
4 months ago · Google
"I had the best window cleaner in Dundas do my apartment windows today! So friendly and thorough. I highly recommend her!"
Kate Young
3 months ago · Google
"Netasha did an amazing job on all the windows we had her do. She was very professional and had all the pro equipment to get the job done in a timely manner. I highly recommend her for any of your window and trough cleaning."
Dan Kaiser
1 year ago · Google
"Also the friendly service and detail oriented job added to the experience. Absolutely recommend BTG Exteriors to anyone looking for a thorough clean."
Sarah M.
6 months ago · Google
"Fabulous customer service & a job always well done!!! Netasha is incredibly detail-oriented and takes real pride in her work."
James T.
8 months ago · Google
"Great attention to detail and very easy to work with! My windows have never looked this clean. Will absolutely be booking again."
Linda P.
5 months ago · Google