Noticed your solar energy output isn’t quite what it used to be? Dirt, bird droppings, and other debris can lower the efficiency of your roof solar panels.
In Australia, with its long dry seasons and frequent dust, keeping roof solar panels clean is important to get the most energy. Having your system regularly cleaned ensures that it runs smoothly and that you get the best out of your investment in renewable energy.
A well-maintained solar panel roof, combined with gutter guard installation and proper care of your house’s roof, will prevent your home from needing urgent roof repairs or roof restorations.
Steps to clean solar panel on the roof in Australia
In this guide, we will show you how to clean your solar panels safely and effectively using a simple, step-by-step process.
Step 1: Prepare for Safety Before Cleaning
When cleaning solar panels on your roof, safety should be the top priority. Working at height can be risky, so be sure to use a sturdy ladder and set it up securely on level ground. If your roof is steep, wear non-slip shoes, and consider a safety harness for extra security. Having a helper nearby is a good idea, especially if you’re on a higher roof or have panels that are hard to reach.
Extra Tip: Try to clean on a cool or overcast day. Hot panels cause water to evaporate quickly, which can leave streaks and make cleaning harder than it needs to be.
Step 2: Turn Off the Solar Panel System
Before you start cleaning, always turn off your solar panel roof system. Solar panels generate electricity from sunlight, and switching them off helps prevent electrical shocks and protects the system’s components. Almost all panels have a simple power-off button. However, if you aren’t sure, check the manual or ask your installer. This small step will keep you safe and protect your solar panels.
Extra Tip: Turn off the system whenever you’re doing maintenance. This is a quick step that provides extra safety.
Step 3: Rinse Panels to Remove Loose Debris
Begin the cleaning by giving your panels a good rinse to clear any loose debris. Use a regular garden hose with a gentle stream of water to wash away dust, bird droppings, pollen, or leaves. Avoid high-pressure hoses, as these can damage the panels and their seals, which may cause leaks or reduce efficiency. A simple garden hose works well to clear surface dirt without risking damage. If it’s been a while since your last clean, you might spot some areas needing extra scrubbing in the next steps.
Extra Tip: If your roof is steep and hard to get to, use a hose with a spray attachment to get to all areas safely without having to climb too high.
Step 4: Apply Mild Cleaning Solution
If stubborn spots are the problem, a mild cleaning solution is your best bet. To clean, just mix a few drops of gentle dish soap in a bucket of water or use a cleaner made for solar panels. Wipe the panels down with a soft cloth or sponge that’s been dipped in the solution. Be sure to avoid harsh chemicals or rough scrubbers, as these can scratch the panels and affect their performance. The trick here is thorough but gentle. Solar panels are an investment, so you don’t want to use the wrong cleaner.
Extra Tip: If your roof drains into garden beds or areas with plants, use eco-friendly soap. This way, any runoff won’t harm nearby plants or wildlife.
Step 5: Gently Scrub and Rinse Panels
Take a soft-bristled brush or sponge and gently scrub away any leftover dirt or grime. You don’t want to press too hard because you might scratch or damage the panels. Take your time and give each panel a good, gentle scrub, especially if you notice any stubborn spots. After scrubbing, rinse the panels thoroughly with clean water to get rid of all soap residue.
It’s important to rinse well because leaving any soap behind can block sunlight and reduce efficiency. To finish, dry the panels with a squeegee or a soft cloth to prevent water spots and streaks. It keeps the surface clean and maximises the amount of sunlight absorbed.
Extra Tip: If it’s a hot day, avoid using cold water on the panels. Sudden temperature changes can cause cracks in the glass, so it’s best to clean in cooler parts of the day, like early morning or late afternoon.
Contact Us for Professional Solar Panel Cleaning Services
Cleaning your solar panels can be manageable, but it’s understandable if you’d rather not handle it yourself, especially with the heights involved.
If you’re looking for a bit of help on how to clean solar panels on a roof in Australia, Switch Roofing provides careful roof cleaning services designed to keep your system running efficiently. Our team uses gentle, effective methods to protect your roof and panels and maintain their performance without any risk of damage.
Feel free to get in touch with us if you’d like assistance keeping your roof solar panels clean and optimised for maximum energy production.