
Solar panel cleaning in Guildford and Surrey
Solar panel cleaning in Guildford is one of the three jobs we most want to do more of, because it suits exactly the kit we already carry. Pure water fed up a pole from the ground, a soft brush, no chemicals and nothing that scratches, so the panels are clean, the glass is unmarked and nobody has walked on your roof.
Panels collect the same things your windows do, only flatter and higher up, so nobody notices. Dust, pollen, traffic film, bird droppings and the green edge of lichen along the frames all sit on the glass and shade the cells underneath. Rain rinses some of it off and leaves the rest as a tide mark along the bottom edge. A clean takes it all off and lets the panel see the sky again.
We clean home arrays and commercial ones. On a house the panels are usually done from the ground with the pole, the same way we do upstairs windows, and we can do the windows on the same visit. Larger roofs and commercial arrays are looked at first so we quote with the right access in mind.
Pure water matters more on solar panels than anywhere else. Tap water dries and leaves its minerals behind as a film, which is exactly what you are paying to remove. Ours is filtered on our own premises through a five-stage reverse osmosis process, so it dries to nothing. No detergents, no cleaning agents, nothing left on the glass or the frames.
Signs your panels need a clean
You cannot see much of the array from the ground, but these tell you what is sitting on it.
A dull film or tide mark along the bottom edge of the panels
Bird droppings you can see from the garden
Green lichen or moss creeping along the frames
The panels have not been cleaned since they went up
How we clean solar panels
The same approach as our window cleaning, because it is the same kit and the same water.
Step 1: Look first, then quote
Send a photo of the roof or ask Patrick to call round. He checks the access and agrees a fixed price. That price is the price you pay.
Step 2: Brush from the ground
Pure water goes up the pole to a soft brush that works across each panel and along the frame edges, lifting dirt without scratching.
Step 3: Rinse to nothing
A final rinse with pure water, which dries without spots or film because there is nothing dissolved in it.
Step 4: Check and tidy
We look the array over before we leave, pack the pole and take anything we have brushed off with us.
Why book us for your solar panels
We clean solar panels the same way we have cleaned windows since 2007, and with the same guarantee.
Fixed price, never paid in advance. Patrick agrees the price before we start. You pay when the job is done and you are happy with it.
Nothing on your roof. Poles reach most home arrays from the ground, so nobody is walking on your tiles or leaning a ladder on your gutter.
Pure water, no chemicals. Filtered on our own premises through five stages. Nothing is left on the glass to attract dirt back.
Free re-clean within three days. If a panel has been missed, tell us within three days and we come back free of charge.

Where we do solar panel cleaning
We are based at Park Barn in Guildford and work within about 10 miles of it, so most of our solar panel cleaning is in Guildford itself, Woking, Camberley and Farnborough. We go further for larger jobs.
Also covering: Farnborough, Godalming, Farnham, Aldershot, Fleet, Frimley, Ash, Cranleigh, Weybridge, Cobham, Leatherhead, Dorking and the villages between. See all areas.
Common questions about solar panel cleaning
Cost, how often, ladders and what counts as a clear.
How much does solar panel cleaning cost?
It depends on how many panels there are, how high the roof is and how easy the access is. Send a photo of the roof and Patrick will give you a fixed price. That price does not change on the day, and you pay once the job is done.
Do solar panels need cleaning?
Rain rinses off loose dust but leaves pollen, traffic film, bird droppings and lichen behind, and the bottom edge of each panel collects a tide mark. Anything sitting on the glass shades the cells underneath it. A clean takes it all off.
How often should solar panels be cleaned?
Once a year suits most homes, in spring before the strongest sun. Panels near trees, under a flight path or beside a busy road can need it twice. We can add it to your window cleaning round so it is not forgotten.
Will cleaning damage the panels?
Not the way we do it. A soft brush, pure water and no chemicals, which is the same method we use on glass every day. Nothing abrasive touches the panel and nobody walks on the roof.
Do you clean commercial solar arrays?
Yes. Larger roofs and commercial arrays are looked at first so we quote with the right access in mind, whether that is poles from the ground or a powered platform.
Jobs we often do on the same visit
One van, one visit, one fixed price for the lot.
Window cleaning
Outside and inside, on a regular round or as a one-off. Pure water poles reach up to 65 ft, and frames and sills are cleaned every visit.
View serviceRoof cleaning and moss removal
Moss scraped and brushed off, gutters cleared of the debris, then treated to slow regrowth.
View serviceGutter cleaning and clearing
Blocked gutters and downpipes cleared, and the outside of the gutters washed. Conservatory gutters and high-level runs included.
View service
Get a fixed price for solar panel cleaning
Send a photo of the property, or ask Patrick to call round. The price is agreed before we start, and you pay once the job is done and you are happy with it.
- Fixed price agreed before we start
- Never pay in advance
- Free re-clean if you tell us within three days
7am to 5pm, seven days. Calls and messages answered out of hours. Or email sales@brilliantwindowcleaners.com with a photo of the property.
Get a free quote
Tell us about the property and Patrick will come back with a fixed price.
Panels under a film? We'll clear it.
Pure water, no chemicals, a fixed price, and nobody on your roof.
