Homes
Residential solar panel cleaning
Rooftop panels collect dust, pollen, ash and bird droppings, especially during long dry spells. Solar cleaning companies clean them safely from the roof or with extension poles.
What's included
- Rinsing and gently scrubbing each panel
- Removing bird droppings and debris
- Clearing leaves from panel edges
- A visual look for obvious issues, at some companies
What affects the price
Number of panels, roof height and pitch, roof type (tile is harder to walk) and how dirty the panels are.
Methods, products and prices vary by company. Ask each one how they clean, what they use and what's included.
What a typical home cleaning looks like
| Step | What happens |
|---|---|
| Arrival | Crew checks roof access, panel layout and any birds or debris under the array |
| Rinse | Loose dust and pollen rinsed off |
| Scrub | Soft brushes on each panel, extra attention to droppings and edges |
| Final rinse | Often with purified water to reduce spotting |
| Walkthrough | Before-and-after photos at many companies |
Many homes with 15–25 panels take an hour or two, depending on roof height and access.
What makes a roof harder to clean
- Tile roofs: common across SoCal and fragile to walk on, so crews may use poles or step carefully.
- Two-story and steep roofs: more safety setup.
- Split arrays: panels on several roof faces take longer than one block.
- Heavy droppings or ash: need soaking and more scrubbing.
Before-and-after: how to check the result
Ask for photos, then compare your monitoring app's output on a few similar sunny days before and after. Output also depends on season, heat and shading, so look for a trend rather than a single day.
Related guides
Preparing for the cleaning
Make sure the crew can reach the side yard or driveway where they'll set up, and that water is available at an outside spigot if the company needs it. Unlock gates, put pets inside, and move cars away from the roof edge so drips don't spot them. If you have a monitoring app, note the production on a few clear days before the visit so you can compare afterward.
Questions
Do they need to get on the roof?
It depends on the roof and their equipment. Some use water-fed poles from the ground.
Do I need to be home?
Usually not, as long as the company has access. Confirm when booking.
Will cleaning scratch my panels?
Companies that use soft brushes and purified water aim to avoid it. Ask what they use and whether they follow the manufacturer's guidance.
Can cleaning be done on a hot day?
Many companies prefer mornings so panels aren't hot and water doesn't dry too fast. Ask about scheduling.
Ready for clean panels?
Send the details once and hear back from local solar cleaning companies.