One-off clean
Best for: Finding out what you have been losing
The whole array cleaned once, and an honest view on how often yours is going to need it.
Solar panels are sold as maintenance free, and mostly they are, but nothing about a London roof stays clean. Dust, pollen, moss from the ridge and bird mess build a film across the glass, and because it happens slowly nobody notices the output dropping. We clean panels with pure water and a soft brush from the ground, the same way we clean the windows underneath them.
A soiled panel is still a panel; it just makes less. The point of cleaning is getting back the generation you already paid the installer for, which is why it is worth doing on a schedule rather than when someone notices.

Shading is not linear. A band of bird mess or moss across the bottom of a panel can hold back a whole string, so a small amount of dirt in the wrong place costs more than an even film of dust across the lot.
It is opaque, it bakes on, and it sits exactly where it does the most damage. It also will not wash off in rain.
It rinses loose dust and leaves everything else, which is why a panel that has been rained on for two years is still filthy.
An annual clean suits most London roofs. Overhanging trees, a mossy ridge or a flat array that does not shed mean twice.
How many panels, what pitch, what is above them. Moss washing down off a ridge is a different job from general dust.
Soft brush and pure water from a pole. No detergent, because anything left on the glass attracts the next lot of dirt straight back.
What we wash off the panels ends up in the gutter below them, so we clear that too rather than leaving you a blockage.
Most people want the middle one, some only need the first, and we will tell you straight if the biggest option is more than your property actually calls for.
Best for: Finding out what you have been losing
The whole array cleaned once, and an honest view on how often yours is going to need it.
Best for: Most domestic arrays
Booked in once a year, usually alongside a window or gutter visit so there is only one appointment to think about.
Best for: Getting the whole roof line done in one visit
The array, the gutters below it and the windows, in one visit and at a better price than three separate ones.
Priced on the number of panels and how easy the array is to reach from the ground. Combining it with a gutter clear or a window clean is cheaper than booking it on its own, because the access is already set up.
A family firm on a regular round through Hampstead, Highgate and the areas around them. If your street is nearby but not listed, just ask.
Tell us about the property and we'll give you a price. No call centre, no pressure, just a straightforward quote.
Free quote · No obligation · Regular rounds or a one-off visit.