Deionised water, no detergent
Detergent leaves a film that attracts dust faster than before. Deionised water dries without spotting and needs no rinse aid, which is why it is the standard for PV.
Home · High-Pressure Washing · Solar Panel Cleaning
Rooftop Solar · Dubai & Abu DhabiSolar Panel Cleaning in Dubai
A rooftop array in this climate loses output to dust faster than almost anywhere else on earth. It is also one of the easiest surfaces to damage by cleaning it the wrong way.
Method
Why it is not just washing glass
Soft brush, no pressure
Panels carry an anti-reflective coating that pressure and abrasive pads destroy. Once that coating is gone, output drops permanently and no cleaning brings it back.
Early morning or evening
Cold water on hot glass risks thermal shock and micro-cracking. Work is scheduled when the array is cool, which in summer means early.
Frames and drainage
Frame edges collect a dust ridge that shades the bottom cell row. Roof drainage around the array is cleared at the same time.
Visual inspection
Cracked glass, discoloured cells, loose clamps and damaged cabling are photographed and reported. We do not carry out electrical work — that goes to your installer.
Frequency and expectations
Honest about what it recovers
Why output drops here
Desert dust accumulation is continuous, and a shamal can coat an array in a single day. Bird fouling and construction dust nearby accelerate it further.
A sensible interval
Quarterly for most UAE rooftop installations, monthly where the property is desert-edge or near active construction. Your inverter data is a better guide than any general rule.
What cleaning recovers
Soiling loss, which is real and measurable on your own generation data. It does not recover degradation, shading from a structure, or a fault in the array.
Safety and access
Roof work with the correct anchor points and fall protection. Where an array needs access equipment beyond that, it is quoted separately.
Shams Dubai systems
Residential net-metered installations are increasingly common. Cleaning affects generation, so it is worth checking your export figures before and after.
Questions
Answered plainly.
It varies widely with location and time since the last clean, and your inverter data is the only reliable answer for your array. Check generation before and after a clean rather than trusting a general figure.
Tap water spots as it dries and the residue attracts dust. A soft brush with deionised water is the method; pressure washers and abrasives cause permanent damage.
No. We clean, inspect visually and report what we find. Electrical faults go to your installer or a licensed contractor.
Quarterly for most installations, more often on the desert edge or near construction.
Yes, quoted by array size and access after a site visit.
Background reading
Worth knowing before you book.
Priced after an inspection. Fixed in writing.
Inspection, fixed price in writing, and anything missed is put right within 72 hours at no charge.