The price of a solar panel cleaning comes down to a handful of things: how many panels you have, how hard the roof is to reach, and how dirty the glass is. Panel count and roof access usually matter most. We don’t publish a flat number because two homes on the same street can need very different amounts of work. Estimates are free, and you can get one by sending your panel count and a photo of the roof.
Below is what moves the price, what a good estimate should include, and what to ask any company before you book.
What changes the price of a solar panel cleaning?
Most of it is time and risk. A bigger array takes longer. A harder roof takes longer and calls for more care. Heavier dirt takes more soaking and brushing. Here are the main factors.
| Factor | Why it matters |
|---|---|
| Panel count | More glass means more time on the roof |
| Stories | A second or third story means more setup and slower movement with equipment |
| Roof pitch | Steeper roofs take more care and more time to move around |
| Roof material | Tile can crack under a bad step, so crews move slowly and plan routes |
| How dirty the glass is | Light dust rinses off quickly. Baked-on film and ash paste need soaking and brushing |
| Bird droppings | Dried droppings have to be softened before they come off |
| Array layout | Panels split across several roof planes or spread out take longer than one tidy block |
| Repeat plan | Panels kept clean on a schedule are quicker to do each time |
None of these is unusual. They’re the same things any roofer or window cleaner would ask about.
Does the roof type change the estimate?
Yes. A low-slope composition shingle roof is the easiest case. Tile roofs are common across Porter Ranch, Northridge and the Santa Clarita Valley, and they’re slower because tile is brittle and every step has to be placed carefully. Steep pitches and multi-story homes add more time.
If you tell us the roof material and the number of stories up front, the estimate gets closer to the final number. A photo of the roof from the street or the yard helps even more.
How much does the amount of dirt matter?
A lot. Our valley summers are dry, and panels collect dust for months with no rain to move it. After a season of pollen, dust and the odd bird, the glass has a film that needs more than a quick rinse. After ash from a wildfire, it needs even more, and we cover that in our guide to solar panels and wildfire ash.
Panels cleaned on a regular schedule stay in better shape. If yours haven’t been touched in years, expect the first visit to take longer than the ones that follow. How often is right for your home is in how often to clean solar panels.
What about birds and nests?
Droppings come off the glass during a normal cleaning, though dried and layered ones take extra time. Nesting under the panels is a separate problem. Birds like the warm gap between the panel and the roof. If that’s happening at your house, bird proofing with humane mesh, spikes or netting is a separate service, done after the panels are clean. We’d list it as its own line on the estimate so you can see what each part costs.
What should a good estimate include?
Ask for these in writing:
- The number of panels being cleaned
- Whether the roof, stories and access are part of the price
- What the method is (we use soft brushes and purified water, with no high pressure on panels or glass)
- Whether bird proofing, window cleaning or other services are separate lines
- What happens if the crew can’t reach part of the roof
- The company’s guarantee
Also ask whether the company is licensed and insured. We are, and we say so as “Licensed & Insured” because it matters when someone works on your roof.
Can I clean the panels myself?
You can, but we’d rather you didn’t go up there. Roofs are slippery with dust and pollen, tile breaks, and falls are a real risk. From the ground, a garden hose can rinse some dust, but it won’t remove a film, and tap water here is hard. As it dries, it can leave white mineral spots on the glass. Purified water dries clean.
If you have a ground-mount array you can reach safely, check your installer or panel manufacturer’s cleaning guidance before you touch anything. Don’t use a pressure washer, and don’t scrub with anything abrasive.
How do recurring plans work?
A recurring plan means we come on a set schedule instead of waiting for you to remember. Membership is free to join. After your first cleaning, you pick how often you want us: quarterly, twice a year or once a year. We schedule the visits and send a reminder before each one.
In general terms, a more frequent plan means a lighter job each time, because less builds up between visits. That’s why the per-visit price on the more frequent plans is lower. Homes against open hillsides, near trees or close to construction tend to do better on the more frequent options.
What questions should I ask before booking?
- Do you work from the roof, and are you insured for it?
- What water do you use on the glass?
- Do you use high pressure on the panels? (The answer should be no.)
- Can you tell me what you’ll do if you see a cracked panel or loose wiring? (We report what we see. We don’t repair or inspect electrical equipment.)
- What does the guarantee cover?
For the effect on production, see does cleaning solar panels increase output. And if your panels carry a warranty, check your installer or manufacturer’s cleaning guidance first.
Is the cheapest estimate the best one?
Not always. A low number can mean the crew skips the frames, rushes the lower edges or uses tap water that leaves spots behind. It can also mean the estimate left out the roof access or the bird droppings, and the price changes once someone’s up there. Compare what’s included, not only the total.
It also helps to ask how the company handles a roof it can’t safely walk. Some roofs are too steep or too fragile on the day, and a good crew tells you before starting, not after. We’d rather reschedule than risk a cracked tile or a fall.
What can you do to keep the job simple?
A few small things make the visit faster and the estimate more accurate.
- Send your panel count and a photo of the roof from the yard
- Tell us the roof material and the number of stories
- Give us the gate code or tell us where the side gate latch is
- Mention any birds, nests or heavy droppings you’ve seen
- Tell us if the panels haven’t been cleaned in years
You don’t need to be home, as long as we can get to the roof. We can send a note when we’re done.
Get an estimate for your roof
Send us your panel count and a photo of the roof and we’ll give you a free estimate. We serve homes from Chatsworth to Woodland Hills, Thousand Oaks and Santa Clarita. See every area we cover or read about our solar panel cleaning. Call (818) 913-1626, Monday through Saturday, 7am to 7pm.