Can you provide a certificate of insurance and license details?

Yes. Request current license and insurance documentation for your vendor file before the first visit. Send any onboarding paperwork, induction requirement or COI wording your site needs with the inquiry.

Can cleaning happen outside business hours?

Usually, within safe daylight working and your access arrangements. Rooftop work at night is not appropriate. Tell CA Solar Wash your acceptable window and the team will tell you what is workable.

Do you service ground-mounted commercial arrays?

Yes. Ground mounts are quoted on row count, row length, access for equipment and vegetation around the array. Say whether the site has a water connection.

What reporting do we get?

Before-and-after photographs per visit, plus a note of anything found that needs attention beyond cleaning. Tell CA Solar Wash who should receive it and in what format.

Will you work with our existing O&M provider?

Yes. CA Solar Wash cleans and reports; anything electrical stays with your licensed contractor. Tell the team who they are and what they want to be told about, and the team will report it that way.

Commercial Rooftop Solar Cleaning

Commercial solar cleaning needs an agreed access plan, clear limits and records the site manager can use. CA Solar Wash offers professional cleaning and visible-condition reporting across the stated Central Valley service area. Send the array size, roof access rules and existing operations-and-maintenance requirements so CA Solar Wash can confirm whether the site is a suitable fit.

Accountable service

Fresno, Clovis & the Central Valley

Written workmanship warranty

Coordinated Scheduling. Clear Reporting.

The service plan covers scheduling, access, cleaning and delivery of the completion photos. Usually booked about a week out, and you get the date straight from the team.

The constraint on a commercial roof is rarely the cleaning. It is roof access, who escorts the team, which hours are acceptable, and what else is up there: HVAC, extraction, skylights, a fragile deck. Settle those once and a recurring schedule runs itself. Send operating hours, the access arrangement, who holds the roof key and any certificate of insurance wording or vendor onboarding form with the inquiry, not on the morning of the first visit.

Clean reflective solar panels beside a residential tile roof — A rooftop solar array photographed by the business.

What a commercial scope names

Vague scopes are where recurring maintenance goes wrong. Yours names each of these.

The array or arrays included, by roof section or building, with an approximate module count.
Visit frequency, and which months the cleans fall in relative to your production peak.
The access arrangement, escort requirement and acceptable working hours.
What is documented per visit and who receives it.
What happens when CA Solar Wash finds damage: who is told, how fast, and what the team does not touch.
What is excluded: electrical work, inverter servicing and anything that needs a solar contractor license.

Purified water, soft brushes, no pressure

The method on a commercial roof is the method on a home roof. Deionized water and soft brushes lift the dust film and rinse clean without mineral spotting. No pressure washer on the glass, no abrasive pads, no chemical residue. The proposed method is checked against the installed module instructions.

Pigeons find commercial arrays too, and on a low-slope roof the mess spreads fast across the membrane. CA Solar Wash clears nests and droppings and fits galvanized steel mesh around the array perimeter with no roof penetration. On a commercial membrane that matters more than anywhere: nothing is drilled through your roof.

Solar panels across a gray shingle roof beneath cloudy skies — A solar array on a shingle roof.

Red cleaning brush on solar panels with visible dusty and rinsed sections — Solar panel glass during a cleaning visit.

What CA Solar Wash does not touch on your roof

The team cleans, inspects visually and documents. The team does not disconnect, re-torque electrical connections, open combiner boxes, service inverters or repair the system. Those need a licensed solar contractor, and on a commercial system usually your own approved vendor under the warranty or O&M agreement in place.

What the team does is tell you fast and with photographs when the team finds something: a cracked module, visible discoloration at a connection, damaged conduit, a blocked drain, lifted flashing. The Department of Energy treats that routine observation as part of ordinary solar operations and maintenance, without replacing the site maintenance provider or an electrical inspection.

How a commercial visit runs

Scroll sideways to see all columns.

Stage	What happens	What you provide
Paperwork	License and insurance details go into your vendor file.	COI wording, onboarding forms, induction requirements.
Access	Roof access, escort and hours are confirmed before the day.	Key holder contact and acceptable working window.
Clean	Deionized water and soft brushes across the array. Any nesting assessed and separately scoped before disturbance.	Outdoor water connection where the site has one.
Report	Before-and-after photos plus anything that needs attention beyond cleaning.	Who receives the report and in what format.
Repeat	Next condition review or clean agreed from the site needs.	Sign-off on the recurring schedule.

Agree capacity, isolation and acceptance before booking

The proposed service should be matched to the size and access requirements of the project. Confirm the work area, estimated duration, equipment needs and any sections outside the proposed scope before raising a purchase order.

Your approved system operator remains responsible for electrical isolation, lockout procedures and system restart where required. Define acceptance by the work completed and records delivered, not an unmeasured output increase. Identify who receives urgent findings and who authorizes any change.