Solar Panel Cleaning Newcastle

We use soft, non-abrasive brushes and low-pressure water, generally via a water-fed pole system, to gently lift dirt, pollen, and grime from the panel surface without scratching the anti-reflective coating or putting mechanical stress on the glass, seals, or frame. Where the water supply allows, purified or deionised water gives a genuinely spotless, streak-free finish without leaving mineral deposits behind as it dries, which ordinary tap water can do in areas with harder water.

We don’t use stiff or abrasive brushes, which can permanently scratch the anti-reflective coating on the glass, and we don’t use harsh chemicals, bleach, or anything acidic beyond a very mild, heavily diluted solution for stubborn organic staining if genuinely needed. We also avoid cleaning panels when they’re hot from direct sun, since pouring water onto hot glass can cause thermal stress and, in rare cases, contribute to cracking, timing the clean for cooler, overcast conditions or early or late in the day instead.

Solar panels are typically roof-mounted, and safe access matters as much as cleaning technique. We use appropriate access equipment and safety procedures for roof-based work, and we don’t walk directly on panels, which can crack cells or damage the surface even without any cleaning taking place.

Dirty panels can lose a meaningful percentage of their output, commonly cited estimates range from around 5 to 25 percent depending on how dirty they’ve become and local conditions, so a proper clean can make a genuine, measurable difference to a system’s generation, particularly for panels that haven’t been cleaned in a year or more, or that sit beneath trees or near a busier road with more airborne grime.

This varies by location: panels near trees, on a coastal site exposed to salt spray, or near a road with heavier traffic pollution typically need cleaning more often than an exposed, elevated roof with good rain-washing. Roughly once or twice a year is a reasonable general guide, and we can advise on a sensible schedule once we’ve seen your specific installation and its surroundings.

Different manufacturers set slightly different specific requirements around cleaning method and frequency in their warranty documentation. If you have your panel manufacturer’s guidance to hand, we’re happy to work within whatever it specifies for your particular system.

Beyond the risk of warranty-voiding damage from the wrong method, solar panel cleaning involves genuine roof access and safety considerations, along with a degree of electrical awareness given the equipment involved. The combination of a specialist cleaning technique and safe roof access is exactly the kind of job better handled professionally than attempted with a garden hose and a stepladder, particularly for panels on a pitched or higher roof.

If you’re not sure whether your panels genuinely need cleaning, a visual check from ground level, or a look at your generation figures compared to the same time last year, can give a reasonable indication. A noticeable dip in output on an otherwise sunny day, combined with visible dirt or staining, is generally a good sign a clean is overdue.

Pricing depends on the number of panels, roof pitch and access, and how established any dirt or staining has become. We give a clear, agreed quote before starting.

We clean solar panels across Newcastle upon Tyne and Northumberland, within a 25-mile radius, including Gosforth, Jesmond, Gateshead, Whitley Bay, Tynemouth, Cramlington, Killingworth, Blyth, Ashington, Morpeth, Ponteland, Darras Hall, Wylam, Prudhoe, Corbridge, Hexham, Washington, Sunderland, Consett, and Durham.