September 07, 2016
A customer told us he’d treated KRend with Benz Lightning Cleanze but some marks remained. He wanted to know why this could be and what we suggested he did.
If it was a very hot day when the KRend render was treated with Lightning Cleanze, it may have "boiled off" soon after application.
This, combined with the porous nature of KRend, and all wall renders, may have meant that the chemical didn’t stay on the surface long enough to do it's job.
1) Lightly pre-wetting the surface (a garden hosepipe is fine) prior to application in hot conditions. This will cool the surface and mean that the likelihood of Lightning Cleanze boiling off is significantly reduced.
It's important that the surface remain wetted by Lightning Cleanze for at least 30 minutes, and ideally 60 minutes, following application. This allows the chemical time to work.
2) Ensure your Lightning Cleanze mix is 5:1
3) Avoid applying in very hot sun. Work either earlier or later in the day if necessary.
4) Ensure you brush Lightning Cleanze gently but firmly into the surface. This will ensure it gets deep into the biological growths that cause the "dirty" appearance.
No abrasive or aggressive scrubbing though. This is because wall render is quite a delicate building material and can be damaged by overly aggressive scrubbing.
5) Finally, rinse thoroughly.
6) For a perfect job, complete with a spray of Benz Bio Cleanze at 50:1 (40:1 in winter).
This will provide long-term biocide protection against re-colonisation. Bio Cleanze will also continue to clean the render for several months following application.
We hope this information is helpful and inspires you to succeed in softwashing.
Ben, Leo & Fiona
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September 15, 2021
Many soft wash contractors can be unsure of the safest way to soft wash asbestos roofs. So in this post we lay out the best practices we've learned from running a soft washing business since 2013.
Click the link on this page to learn how to treat asbestos ...
September 08, 2021
Ben demonstrates how to scrape moss and lichen from natural slate roof tiles and treat the biofilm to kill all the growths on this natural slate roof.
Click the link on this page to watch the how-to video ...
September 02, 2021 2 Comments
When soft washing it's vitally important to protect surrounding building materials. e.g. lead flashing. And not to create "clean streaks" – from overspray and run-off – on surfaces that are not part of your contract.
Click the link on this page to watch how we achieve this when soft washing a chimney ...
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.