Removing algae from external facades - Weber Renders & Decorative Finishes 

Hi - 60 bar on a fan setting is our recommendation, the water volume shouldn't effect the pressure if set at 60 bar. thanks Weber

The water flow IS THE MOST IMPORTANT THING - if water flow happens to be 50 litres per min at 60 BAR it could knock a hole through the render. If the WATER FLOW is 2 litres per min - it wont be enough. The Correct method of cleaning your products would be water flow at 5 litres per min at 50 BAR using a 45 degree fan jet. Better still a SoftWash System which is designed to clean render would be a lot better. Pressure washers which can be turned up - will be by employees - who think they will work faster. If you would like to attend one of our next education open days here in Ashford, Kent please login to our website and you will receive updates. www.softwash-systems.com We would be happy to demonstrate our systems and methods to one of your problem sites, please let me know.

weber CL150 can be used on most masonry substrates and our thin coat renders. We would advise the product is only used when rain is not expected for the 48hours the product is on the wall. Rain could wash the product off the surface and reduce its effectiveness... if you require any further information please contact our Technical Team on technical@netweber.co.uk or call 01525 718877

Hi Roberto, yes that would be fine wash it down with a hose to remove the algae and Weber CL150 from your facade.

@@SaintGobainWeberUK thank you very much for your reply. I’ve used another product where you apply and leave it but it’s taking to long to see results, I’m told it can take up to two months to see results but I can’t wait that long.

@@robertolombardi3698 More info on the product here... www.uk.weber/weber-cl150 if you want to chat it over, feel free to call our Tech Team on 01525 718877 (option 2) thanks...

Hi, weber CL150 was developed for algae removal, we haven't tested on bird poo, we would recommend cleaning with a mild detergent and pressure washer on a low fan setting. You can protect your clean render with weberend protect (www.netweber.co.uk/renders-decorative-finishes/products/ancillary-products/weberend-protect.html) which will help protect the surface and avoid staining going forward...

Hi Manny, yep it was a nightmare day to be filming in Wales! The videographer was booked in so we had to go with the flow using a gazebo where we could!!

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Hi George, yes it can.

Hi @Ladosligese, weber CL150 has been specifically designed and tested for the effective removal of algae and fungal growth from the surface of Weber renders, household bleach may not be as effective on certain staining or if the bleach is too strong, it could affect the aesthetics of the rendered finish. weber CL150 is supplied ready to use and has been pre-diluted to the correct strength reducing any risk of damaging the render. In addition, the use of cleaning or decorating materials that have not been approved by Weber can invalidate any guarantees currently in place for the render system. If you require any further information please contact our Technical Team on 01525 718877 or email technical@netweber.co.uk

@@SaintGobainWeberUK ty for the reply, ill look into it since i need to rinse my facade on white limed wall on my house . again ty for the quick reply

Hi, yep it was a nightmare day to be filming in Wales! The videographer was booked in so we had to go with the flow using a gazebo where we could!!

Hi, depends on your budget, size of the building and how bad any environmental growth is... you could employ a company who is set up to do it using equipment which negates scaffolding and can be done in no time at all. www.h2ocleaningservice.co.uk/

Hiya, for larger jobs there are professional service companies that work with high-level equipment. This video was designed to show a homeowner using domestic equipment how to clean small areas of their house that might be prone to algae growth due to limited light (north-facing or overhanging trees). Check out www.h2ocleaningservice.co.uk/render-cleaning/ if you have a large project