Why can white patches appear on soft washed pebble-dash render?
Before being soft washed, the areas of pebble-dash render where pebbles have been removed will likely have been "camouflaged" by the general colonisation.
The soft wash treatment will have removed the camouflaging colonisation, exposing the newly cleaned (pebble-free) render underneath.
You may also notice "clean" patches on some other renders which have weathered over a number of years. A common area where this can occur is immediately under window sills.
The render under a window sill may be very clean looking compared to the rest of the wall even after all the render has been treated. This is because the render under the sill is somewhat protected from weathering and so does not discolour as much.
There’s also the possibility that pebbles have been dislodged by high pressure washing and/or brushing too hard with a stiff bristle brush.
Click here learn more about soft washing pebble-dash render
We hope this information is helpful and sincerely wish you great success in your soft washing business,
Ben, Leo, Fiona, Stevie & Anthony
You can order Benz softwash chemicals & equipment by phone:
GB (England, Scotland, Wales): 0800 70 74 222
Ireland and other countries: 00353 214 622 978
Lines open Monday - Friday, 9am – 5pm
Note: The above numbers are for taking orders only (click here for tech support)
Click here to explore all Benz Softwash cleaning chemicals & equipment
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Leo
February 21, 2022
PS: Also, please clarify which product you are referring to, as we sell several products for soft washing. There is no generic product called “Benz”.