January 23, 2018
A customer asked us for advice on the best way to clean moss from a roof tiled with artificial, man-made fibre cement roof slates.The problem is that fibre cement slates usually have a surface coating, which can break down over time though natural weathering, or as a result of a poor manufacturing process.
1) When the surface coating begins to break down the tiles become more vulnerable and require greater care when cleaning them, when scraping and brushing.
2) Remember to inform your customer that moss falling from roofs leads to rapid colonisation of algae on paths and patios, and that leaving the moss to grow could potentially damage their roof.
We recommend treating man-made roof slates with Benz Bio Cleanze, after manually removing the worst of the moss and lichen.
Bio Cleanze will flow up inside the laps more effectively than other cleaning products, ensuring the growths and spores are killed. In our experience this is the best way to treat man-made roof slates.
It is essential that before softwashing a roof, softwashing contractors inspect the man-made roof slates, and look for existing damage to the coating, during the quotation stage.
It is important to make your customers aware that, through cleaning and treating the roof, the damaged coating underneath, which may have been hidden by the algae/moss, may be exposed.
Your customer needs to understand that the exposed damage is: a) usually only to the surface coating b) the slates will usually still be weatherproof c) the slates can look a lot worse after being cleaned than they actually are d) the treated and cleaned slates can be repainted with whatever colour your customer chooses.
Quick tip: If the slates are under guarantee, the manufacturer will usually have a legal duty to repaint them without charge.
After you've explained the reality of what to expect after a soft wash treatment it's then up to your customer to decide if they would like to go ahead.
And then even if they don't like the look of their roof after you've cleaned it, you can rest safe in the knowledge that you did all you could to help them make the best decision. And you cannot be blamed for poor workmanship or malpractice.
The damage will usually only be to the surface coating, which can be repainted. And fortunately most of the time the slates themselves will remain sound, so do not need repairing.
We hope this information is helpful.
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.