Residential Solar Cleaning

Once or twice a year for most roofs, and more often under trees, near active construction, or where the marine layer settles heavily. Long dry stretches are the reason: dust builds up for months with no rain to rinse it. Our post Is Solar Panel Cleaning Worth It in San Diego? walks through what NREL and UC San Diego researchers measured.

Often, yes. Near the coast, salt and marine layer leave a film on the glass; inland, wind and dust do the same job. In newer communities like Del Sur, where nearly every roof carries solar, inland dust and long dry stretches cut output before anyone notices the bill.

Yes. Every cleaning includes a visual inspection of the mounting, wiring and panel condition, with any issues photographed and flagged, at no extra charge.

Not the way we do it. We use deionized water and soft tooling, no detergents and no abrasives, which keeps the cleaning within what panel manufacturers allow. Pressure washing a panel array is what puts a warranty at risk.

It dries without leaving mineral residue. Ordinary tap water leaves spots on the glass as it evaporates, which is the opposite of what you want on a surface whose whole job is letting light through.

RadPad is locally owned and operated in San Diego, serving San Diego County, including Oceanside, Carlsbad, San Elijo Hills, Encinitas, Solana Beach, Del Mar, Rancho Santa Fe, Del Sur, La Jolla, San Clemente, and Dana Point. If you're near the edge of that map, call and we'll tell you straight whether we can get to you.