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Saint Gobain Weber CL150 Algae and Fungi Cleaner

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£25.76 Incl. VAT
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The Saint Gobain Weber CL150 Algae and Fungi Cleaner comes in either 25L or 5L. This is a water-based render, brick and masonry wash with specific biocides which can also be used as an algae treatment. As well as this, CL150 is effective against a range of bacterial, fungal, yeast and mould species. The Saint Gobain Weber CL150 Algae and Fungi cleaner has been designed to kill green, black and other organisms on your walls or other masonry. It is perfect to use before applying decorative finishes to give the best outcome. Please note, the CL150 is perfect for use in preparation for surfaces where Weber renders or decorative finishes will be applied.

Features & Benefits: Saint Gobain Weber CL150 Algae and Fungi Cleaner

  • Biocide to kill bacteria, algae, fungus & mould
  • Suitable for use as a patio cleaner
  • Fast acting
  • Water-based
  • Suitable as a render cleaner for use with Weber renders & decorative finishes range
  • Ready to use multipurpose product
  • Shelf life: 12 months from manufacture date
  • Coverage: 10m2 per litre

Saint Gobain Weber CL150 can be used on:

  • Brickwork
  • Blockwork
  • Concrete
  • Stone
  • Cement-based board
  • Gypsum plaster
  • Timber
  • Previously decorated surfaces
  • Render


  • Organic growth could indicated consistently damp conditions, rising damp, faulty plumbing or guttering should be considered as possible sources
  • Once a wall is tested for soundness, drench apply Weber CL150 onto the wall surfaces
  • Where existing bossed render is being removed as part of the preparation, Weber CL150 solution should be applied to the affected areas after the defective render has been removed
  • When treating large areas, Weber CL150 is best applied using a pressurised Knapsack or garden sprayer but can be brush applied if areas are limited
  • Weber CL150 should be left for a minimum of 48 hours to take effect and kill the growing moss and unseen spores
  • Dead growth should be removed by brushing with a stiff bristle or wire brush or alternatively by power washing
  • Please wear protective clothing and safety equipment
  • All equipment should be cleaned immediately after use with water
  • Waste material should not be emptied into drainage systems
  • Coverage is approximately 10m2 litre, this will vary depending on the suction of the substrate and method of application
  • Don't use if frost is forecast within 24 hours of use
  • Don't use in wet or damp conditions
  • Must be applied in temperatures between 5-30°C
  • Protect from sunlight
  • Keep away from direct heat
  • Keep sealed when not in use
  • Store in a cool dry place
  • 12 month shelf life from date of manufacture.

Please note:

  • Please note, bulk returns are not accepted so it is advised to order a small sample order to ensure it meets your requirements.


Volume 5l

Questions & Answers


Can this be applied to silicone render to remove green algae?


Yes, it would be suitable for use on render. 

Have a question about this product?


5 / 5 3 reviews
Reviewing Saint Gobain Weber CL150 Algae and Fungi Cleaner - 25L
30th May
very expensive
Nick Shaw
Reviewing Saint Gobain Weber CL150 Algae and Fungi Cleaner - 5L
20th April 2021
Very effective product, removedl agal green from my rendered wall exactly as shown in the video Ideally it would be a bit less runny but the karcher soon shifted the residue. Would definitely use this again
Fab Funky
Reviewing Saint Gobain Weber CL150 Algae and Fungi Cleaner - 5L
4th April 2021
good stuff
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