March 14, 2018
A customer asked us about the most effective, and safest, ways to clean solar panels on a roof.
The fact is the majority of solar panels are designed to be self-cleaning, and as such require relatively little cleaning.
However, "self-cleaning" is a bit of a misnomer, like "self-cleaning" windows. For sure they don't need cleaning so frequently ... but they do need regular cleaning to remain efficient.
Quick tip: Grime and bird poo doesn't need to cover an entire solar panel to have a negative effect on it's performance.
In certain situations, such as solar panels mounted in a particularly dry area (allowing dust and bird droppings to build up) or where the solar panel's tilt angle is less than five degrees, most manufacturers recommend regular cleaning to ensure the panels continue to work efficiently.
Solar panel manufacturers suggest that using plain fresh water – ideally de-ionised – will be sufficient for cleaning most solar panels most of the time. They also recommend not using detergents that cause streaking and thus compromise the effectiveness of the panels.
Quick tip: In hard water areas it is crucial to wipe all water from the solar panels to prevent limescale/calcium building up.
If you are in any doubt about the best way to clean solar panels we suggest contacting the manufacturers of the panels and asking for their advice.
Materials are continually evolving and it would be wise to check that they have not introduced some new substance into the construction of the panels that cleaning could inadvertently compromise.
Quick tip: Get hold of the manufacturer's Product Data Sheets and Safety Data Sheets, which will tell you the recommended ways to clean their products.
Benz Bio Cleanze diluted 30-50:1 is a good choice (after checking with the manufacturer of the solar panels that the product would be safe to use).
We hope this information about soft washing solar panels is helpful and helps you succeed in your soft washing business.
Ben, Leo & Fiona
PS: Soft washing solar panels is a great market. Think of the many fields of panels that are popping up in fields all over the country, as well those on rooftops. All will need professional cleaning.
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July 21, 2021
We use pencil jets in our brushes because we've found they don't clog or break as much as fan jets.
In the case of the Gardiner 45cm brush we use four of them. We turn the pump down so the flow rate is acceptable and does not produce much run-off.
Flow control at the pole is still critical however. Click the link on this page to learn about the solution we've found to be so successful ...
July 15, 2021
July 10, 2021
Some customers have wondered why we add IPA (Isopropyl Alcohol) to Benz Bio Cleanze. So we thought we'd clear this up and clarify the situation once and for all.
Click the link on this page to read the full Trade Tips post ...
It's a free resource for people wanting to learn about the soft washing industry, to expand an existing business, or build a new business.
Soft washing reduces, or even eliminates, the need to use high-pressure washing.
Instead, once the build up of algae, lichen, fungus, moss and mould – the root causes of properties looking "dirty" – has been treated, the natural "self-cleansing" of sun, rain and wind removes the surface residue through time.
By educating the cleaning trade and public about soft washing we are helping develop an industry that offers sustainable treatments to clean and maintain exterior hard surfaces.
Subscribe to our free trade tips blog to download your "Professional Soft Wash Contractors Pricing Guide".
The free guide shows you – step by step – how to easily, quickly, and accurately create softwash business quotes.
This saves you time, is a highly professional approach, and increases your chances of winning new contracts.