How to Clean Solar Panels – Why Professional Contractors Are Essential for Safe, Effective Results
How to Clean Solar Panels – And Why Sanderson Cleaning Is the Professional Choice
Solar panels are a brilliant long-term investment for cutting energy bills and reducing your carbon footprint. But for them to work at peak performance, they need to be clean. Dirt, dust, bird droppings, traffic pollution, pollen, and algae gradually build up on the glass, blocking sunlight and reducing the amount of energy your system can generate.
That’s where proper solar panel cleaning becomes essential — and why many homeowners and businesses choose a trusted specialist like Sanderson Cleaning. With the right techniques, equipment, and safety measures, Sanderson Cleaning ensures your panels stay operating efficiently while protecting your investment.
Why Solar Panels Need Regular Cleaning
Although solar panels are designed to be low-maintenance, they are constantly exposed to the elements. Rain can help rinse away loose dust, but it’s rarely enough to remove stubborn contamination such as:
- Bird droppings
- Tree sap
- Salt residues (common in coastal areas)
- Moss, algae, and lichen
- Fine agricultural dust
- Traffic fumes and soot
- General airborne pollution
Even a thin layer of grime can dramatically reduce a panel’s efficiency. Clean panels absorb more sunlight, work more effectively, and generate more electricity. Regular cleaning ensures your system delivers maximum output day after day.
How Solar Panels Should Be Cleaned Properly
Cleaning solar panels is not as straightforward as wiping down a window. Panels have delicate coatings and seals that must be protected. That’s why Sanderson Cleaning uses a method specifically designed for safe, effective maintenance.
A professional solar panel clean typically involves:
- Soft, non-abrasive brushes
- These gently lift dirt without scratching or damaging the protective coating on the glass.
- Purified or deionised water
- This ensures no streaks, spots, or mineral deposits are left behind — something that ordinary tap water often causes.
- Water-fed poles
- These allow panels to be cleaned safely from the ground wherever possible, reducing the need to walk on the roof and eliminating unnecessary risk.
- A gentle, eco-friendly process
- Sanderson Cleaning uses environmentally safe cleaning methods that protect both your panels and the surrounding area.
- A visual inspection
During cleaning, professionals can spot issues like cracked panels, loose fixings, or built-up debris that could otherwise go unnoticed.
This approach ensures an immaculate finish that doesn’t compromise panel integrity or void warranties.
Why DIY Solar Panel Cleaning Isn’t Recommended
While it may seem easy enough to grab a ladder and rinse your panels, DIY cleaning poses several risks:
1. Safety Hazards
Solar panels are often installed on sloped, high roofs. Without proper safety equipment and training, climbing onto the roof to clean them can be extremely dangerous.
2. Risk of Damage
Using the wrong equipment — such as abrasive pads, washing-up liquids, or pressure washers — can cause:
- Scratched glass
- Damaged seals
- Water entering the electrical components
- Reduced efficiency
- Voided warranties
A single mistake could result in expensive repairs or a full panel replacement.
3. Poor Cleaning Results
Even with the right intentions, household tools simply don’t match the reach or cleaning power of professional water-fed systems and purified water.
With Sanderson Cleaning, you avoid the risks and gain the reassurance of specialist care.
Why Choose Sanderson Cleaning for Solar Panel Cleaning?
Sanderson Cleaning specialises in professional solar panel maintenance and uses equipment designed specifically for safe, non-damaging cleaning. Here’s why they stand out:
✔ Safety First
All work is carried out using appropriate access equipment, water-fed poles, and trained specialists — eliminating unnecessary risks.
✔ The Right Tools for the Job
Sanderson Cleaning uses soft brush systems and purified water for a pristine, streak-free finish that protects panel coatings.
✔ Exceptional Results
Clients often notice improved panel performance after cleaning, with panels working closer to their maximum efficiency.
✔ Extended Lifespan of Panels
Regular professional cleaning prevents long-term staining, algae build-up, and material degradation.
✔ Warranties Protected
Their cleaning process follows manufacturer-safe guidelines, ensuring your warranties remain valid.
✔ Flexible One-Off or Regular Cleaning Plans
Whether you prefer a one-time clean or a scheduled service, Sanderson Cleaning offers options to suit your needs.
How Often Should Solar Panels Be Cleaned?
In the UK, most solar panel systems benefit from cleaning every 6–12 months. However, locations near farmland, busy roads, coastlines, or under trees may require more frequent cleaning due to increased build-up.
Regular scheduled cleaning ensures your panels stay efficient all year round.
Benefits of Regular Professional Cleaning
Choosing a company like Sanderson Cleaning offers long-term gains, including:
- Higher energy production
- Lower energy bills
- Better return on investment
- Longer panel lifespan
- Reduced risk of permanent staining
- Improved visual appearance
- Peace of mind from professional safety standards
- Clean panels simply work better — and professional cleaning ensures the job is done safely and correctly.
Conclusion
Keeping solar panels clean is essential for getting the most out of your investment. While DIY methods may seem appealing, the risks to both safety and the panels themselves make professional cleaning the smartest choice. Sanderson Cleaning provides the expertise, specialised equipment, and safe methods needed to keep your solar panels performing at their best.
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