How Professional Solar Panel Cleaning Works
A step‑by‑step look at the methods, tools, and safety practices pros use to clean panels thoroughly—without harming coatings, roofs, or landscaping.
Key takeaways
Water
Deionized (DI)
Brush
Soft‑bristle
Pressure
Low / no PW
Safety
Harness & ladder care
Overview
Professional crews clean panels with DI water and soft brushes, agitating soil gently and rinsing spot‑free. The approach protects anti‑reflective coatings and avoids mineral spotting that can occur with hard tap water.
Tools & materials
- DI water system (portable resin tank or RO/DI cart)
- Telescoping, flow‑through poles and soft‑bristle brushes
- Non‑marring hose lines, quick shut‑off valves
- PPE: harnesses, roof shoes, gloves, eye protection
Step‑by‑step process
- Site check & safety: Assess roof pitch, anchor points, electrical, and access.
- Dry brush: Loosen dust and debris to shorten rinse times.
- DI rinse & brush: Agitate with soft brushes while DI water flows.
- Final DI rinse: Leave a uniform sheet; no squeegees needed.
- Cleanup & photos: Collect debris, tidy the area, and document results.
Safety practices
- Use fall protection where required; keep ladders tied‑off and level.
- Avoid stepping on panel frames or junction boxes.
- Mind electrical: no open junctions; keep connectors dry.
What to expect on the day
Expect an arrival window, a brief walkthrough, and careful setup. Crews protect landscaping, manage hoses, and keep rinse water controlled. When access is provided, you don’t need to be home; photos are shared after.
Aftercare & maintenance
In typical conditions, plan for cleaning every 6–12 months. Dusty corridors, coastal salt, or wildfire ash may benefit from a 3–6 month cadence. Booking a second visit in advance also qualifies for 25% off.
Every site is unique. Quotes may change based on access, pitch, or heavy soiling. See our Terms.