October 17, 2020 2 Comments
How to soft wash wet dash (aka "roughcast" "rough cast") pebble dash wall render without using a pressure/jet washer or harsh chemicals?
Apply Bio Cleanze at 30:1 by spraying and then brushing-in to make sure the biofilm is saturated. The render will continue to become cleaner through time by the natural action of sun, wind and rain.
You will see a dramatic improvement within two weeks, sometimes only a few days, when the red staining should disappear. And you will see another improvement at around two months when some of the black will have gone.
From then on it's a slow but sure process of continual cleaning over the next 6-12 months, by which time the surface of wet dash render will be mostly restored.
Treat wet dash render by spraying with Lightning Cleanze at 5:1, followed by a second coat brushed in at 4:1.
Rinse well and then treat with Bio Cleanze at 50:1 to ensure all spores are dead, to give ongoing residual protection, and promote further natural deep cleaning over time.
Much of the black staining will be gone once the wet dash render has dried out and the red staining will be gone in 2-48 hours.
Treat with Bio Cleanze and return to the job after a period of time, say from 2 weeks to 4 months (the longer the better) and use Lighting Cleanze to remove the dead biofilm, which will achieve a faster result than leaving it to nature alone.
A very heavy, well-established biofilm is easier to remove with Lightning Cleanze once it's been treated with Bio Cleanze and left for a period of time. This will reduce the need for multiple applications of Lightning Cleanze to get the wet dash render fully clean on the same day.
With some forward planning this approach is the perfect preparation for painting previously unpainted wet dash render.
There are a number of helpful how-to pages on our website that answer all commonly asked questions about soft washing render.
We hope this information is helpful and sincerely wish you great success in your soft washing business,
Ben, Leo, Fiona, Stevie & Anthony
How to find answers to most soft washing questions: Simply enter a relevant "keyword" or short phrase – e.g. keyword for the above link = "how-to" – into our in-site Search Engine (magnifying glass icon on the 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)
PS: Click here to set up your "Clean & Maintain" programme. After completing an initial soft wash treatment, put your customer on a "Clean & Maintain" ongoing maintenance programme. Your customers will enjoy a permanently clean property and you will enjoy a steady stream of repeat business.
This is clearly a win-win arrangement for you and your customers.
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After pressure washing (power, jet) algae spores rapidly recolonise, and properties return to square one in a very short time. So what's the alternative?
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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.
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