Does that brush rotate ooooog?
Doesn’t look like it does, but I doubt even that would have touched these panels mate, it needed serious pressure, applied to the panel and even then I had to resort to pressure washing.
Softwashing per se, isn’t actually that ‘mental’. It’s amazing how resistant solar panels are to Chems. It’s the wires underneath and the aluminium surrounds you have to careful of. The panels themselves are fine with a small amount of hypo in a mix with surfactant.
I sprayed the mix in the panels, didn’t even touch the lichen.
Turbo nozzle was the only way to get the lichen off.
Low pressure, but enough for the turbo nozzle to break up the lichen. Being careful near the panel edges is a must, although in fairness, solar panels are lot tougher than people think. Like a lot tougher!
That said, you obviously would only use high pressure with the customers permission and also as a last resort.
You also need to ‘know what you’re doing’ with a pressure washer, and not willy nilly blast the panels to bits.
I ended up earning well out of it. But my word was it annoying.