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Big Deal Exterior Cleaning

Get your output back

Solar Panel Cleaning in Sydney

Solar panel cleaning removes dust, salt film, bird droppings and lichen from panel glass using deionised water and soft brushes. Dirty panels commonly lose 15 to 25 percent of their output, and shading from bird droppings can disable an entire cell string, so most Sydney systems benefit from cleaning once or twice a year.

Which suburb are you in?

We cover Greater Sydney — we'll confirm availability for your street.

Step 2 of 3: Suburb

Free quote

From
$220
Typical duration
1–2 hours for a residential array
Recommended every
Every 6–12 months
Covers
7 inclusions

Get your output back

Solar panels in Sydney, done properly.

We use deionised water and soft brushes to remove dust, salt and bird droppings from your solar panels.

Careful preparationAttention to detail

What's included

  • Visual inspection of panels, frames and mounts
  • Deionised water and soft brush clean
  • Bird dropping, lichen and salt film removal
  • Frame edge and gutter-line clean
  • Bird proofing assessment and quote if needed
  • Report on any cracked, delaminated or shaded panels
  • Before and after photos of the array

Surfaces we work on

Rooftop residential solar arraysCommercial and warehouse arraysGround-mounted systemsSolar hot water collectorsSkylights and light tubesPanel frames and mounting rails

What it costs in Sydney

Priced per panel with a minimum call-out. A typical 6.6kW residential array sits between $220 and $380. Commercial arrays are quoted per site.

How often: Every 6–12 months; every 6 months near the coast or under trees.

Get my fixed price0452 605 100

Useful answers

Solar panels questions, answered.

Do solar panels really need cleaning?
Yes. Dirty panels typically lose 15 to 25 percent of their output, and in dusty or coastal locations losses can be higher. Rain does not clean panels properly — it leaves a mineral film as it dries, and it cannot shift bird droppings or lichen growing along the frame edge.
How much output will I get back after cleaning?
Most Sydney systems recover between 10 and 25 percent of generation after a clean, depending on how long it has been and how much salt, dust and bird mess has accumulated. Systems with significant bird dropping coverage often recover more, because a single dropping can shut down a whole cell string.
Will cleaning void my solar warranty?
Not when it is done correctly. Warranties are typically voided by pressure washing, abrasive pads or harsh detergents. We use deionised water and soft brushes only, which is the method solar manufacturers specify. We are also fully insured for work at height on your roof.
How often should solar panels be cleaned in Sydney?
Once every six to twelve months suits most Sydney systems. Clean every six months if you are near the coast, under trees, close to construction, or if you can see visible soiling or bird activity around the array.

On the tools

Straight from a Big Deal workday.

No stock photos — this is our crew, our gear and Sydney properties being cleaned the soft wash way.

Big Deal technician pressure washing a light blue metal roof in Sydney
Roof cleaning in progress — corrugated metal roof being soft washed by Big Deal
Big Deal technician cleaning a house window with a water-fed brush
Pressure washing wand at work on a metal roof, water stripping away the grime
Big Deal technician rinsing a corrugated roof clean on a sunny Sydney day
The Big Deal team reviewing a job on site before starting the clean
Big Deal crew member with leaf blower in front of the pressure washing trailer
Big Deal crew member washing a Sydney roof with the trailer rig below
Big Deal technician in respirator applying soft wash solution

Customer feedback

Real jobs, real Sydney properties.

“I can't recommend them enough! From the quote until the house was shining again we had an excellent communication, transparency and fair price, thanks to Leo and his team, always polite and professional.”

Juan Andrade

Mosman

“Leo and the team did an amazing job cleaning our roof, gutters, and driveway. They were professional, punctual, and paid great attention to detail. The house looks brand new again.”

Paola Desirre Henrique

Castle Hill

“Outstanding work! I was blown away by the team's professionalism and their eye for detail. The final result far exceeded my expectations. Not only did they leave my home spotless, but they also made the entire process effortless and stress-free.”

Glauber Bandeira

Ryde

“Very happy with the service from Big Deal Exterior Cleaning. They cleaned our office exterior and the results were outstanding. Professional team, great communication and excellent attention to detail. Highly recommended.”

Kleber Lima

Parramatta

5.0 from 15+ Google reviews

Read on Google

Often booked together

Other services you may need.

Roof Cleaning

Safe roof cleaning for tile, Colorbond and concrete that removes lichen, moss and black algae without damaging your roof.

Window Cleaning

Streak-free interior and exterior window cleaning, including tracks, sills, frames and flyscreens.

Gutter Cleaning

Full gutter and downpipe clear-out with a flow test, so Sydney storm water goes where it should.

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