October 18, 2019
Soft washing thatched roofs is a lucrative niche market that softwash contractors may like to explore, especially those who live in rural areas.
Treat a thatched roof with Benz Bio Cleanze, giving two good soakings at 20-50:1 (depending on the severity of the infestation) to allow it to penetrate deeply into the thatch.
This will take care of the algae, moss and fungi which will be seen to be dead in around 48 hours. Natural weathering of rain and sun will continue to clean the thatched roof over the following 12 months or so.
Our research suggests that the most suitable products for controlling algae in thatched roofs are quaternary ammonium compounds ("quats") - e.g. Bio Cleanze.
Quats have the advantage over other treatments of being the active ingredient in several wood preservatives.
IMPORTANT: We do not recommend treating thatch with Benz Lightning Cleanze or Tornado Cleanze – or any other sodium hypochlorite product – because the sodium hypochlorite (SH) could damage the reeds.
Sodium hypochlorite is used to destroy wood in pulp mills, so we strongly suggest not spraying it on a thatched roof. This is the same reason we do not generally advocate sodium hypochlorite for cleaning wooden surfaces.
Quick tip: That said, occasionally treating wood with Lightning Cleanze may be indicated. In these situations great care must be taken to protect the wood. Click here to read a Trade Tips article that explains how to soft wash wood/timber
If you are concerned about knowing if the thatch needs replacing or treating, make friends with a local thatcher and have them appraise the property. If it needs replacing then they will get another contract for their time.
With the right person it could become a mutually profitable relationship by putting work each other's way.
No. Bio Cleanze contains IPA (Isopropyl alcohol) at 10-20% to enable the full 50% of active ingredient (DDAC) to be dissolved. Without the addition of IPA the limit is only 40% DDAC.
At the recommended dilution levels of 20-50:1 the amount of IPA actually applied to a surface is minimal. And even this rapidly evaporates.
IPA is not flammable when it is diluted with water by even as little as 5:1, so when applied to surfaces at 20-50:1 dilution there is zero fire hazard.
Click here to watch a video that explains
Quick tip: Most thatched properties will be listed, so check with the relevant authority that they are happy for you to treat with Bio Cleanze and obtain their written permission before treating. The owners of thatched properties will almost certainly know the relevant local authority to ask.
How to find answers to most soft washing questions: Simply enter a relevant "keyword" or short phrase (e.g. keyword for above link = "how to") into our in-site Search Engine (the magnifying glass icon on main menu)
GB (England, Scotland, Wales)
Phone: 0800 70 74 222
Ireland and other countries
Phone: 00353 214 622 978
Lines open Monday - Friday, 9am – 5pm
Please note: The above numbers are for orders only (click here for tech support)
We hope this information is helpful and sincerely wish you great success in your soft washing business,
Ben, Leo, Fiona, Stevie & Anthony
PS: After completing the first softwash treatment, put your customer on a "Clean & Maintain" ongoing maintenance programme. Customers will enjoy a permanently clean property and contractors will enjoy a steady stream of repeat business.
This is clearly a win-win arrangement for both customer and contractor.
Comments will be approved before showing up. Please revisit to read our response.
February 03, 2023
Click the link on this page to find out ...
January 27, 2023 2 Comments
When is it safe for humans and animals to return and use a soft washed property?Click the link on this page to find out ...
January 20, 2023
Do you understand the legalities and chemical implications of mixing weedkillers with a softwash DDAC biocide such Benz Bio Cleanze?
Click the link on this page to find out ...
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 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.