Guard Industry


Curative and preventative treatment against
green deposits, lichens and fungi

Guard® Anti-M 24 - Moss, Algae and Mould Remover

4.00 out of 5
(1 customer review)


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Anti-M 24 Mould Remover Logo

Guard® Anti-M 24 is a preventive and curative treatment with a long-lasting action. It will kill off biofilms and organic growths right down to the roots and inhibit regrowth for up to 3 years.


  • Guard® Anti-M 24 destroys all parasitic vegetation, which is then washed away by the rain or simply brushed off.


  • The active ingredients of Guard® Anti-M 24 are fixed into the substrate. They limit the proliferation of mould and make it more difficult for parasitic plants to germinate.

Guard® Anti-M 24 is a Safer Outdoor Cleaner & Mould Remover

Guard® Anti-M 24 does not contain chlorine or organic solvents. It is a safer alternative to harsh chemical cleaners like acid, bleach and alkaline cleaners. Such chemicals can do significant damage to the materials being cleaned and to the user. Guard® Anti-M 24 is harmless to treated surfaces, and will not alter the natural look of the material.

However, Guard® Anti-M 24 is still a biocide. It needs to kill off biofilms afterall. All biocides should be used with care. Before using, always read the label and the product information. Care should be taken to ensure overspray does not fall onto garden plants or into ponds containing fish.

It Won’t Happen Over Night But It Will Happen

Please note that Guard® Anti-M 24 is a slow acting but long lasting treatment. If you need something cleaned instantly this probably isn’t the product for you. The treatment will kill off the biofilm but the residuals still need to be physically removed either by brushing them off or through natural weathering by the elements. How quickly or slowly this happens depends on incliment weather and at which time of year the product is applied. The effects of the treatment are usually noticable within 2 weeks and will continue to improve throughout the first year.

It’s slow action is actually the secret to how thorough it is at completely killing biofilms and from stopping them coming back. When biofilms are exposed to harsh chemicals the outer layers dieback rapidly and this creates a crust that the protects the underlying growths from being exposed to the chemicals. Unless you physically remove these crusts and reapply chemical, multiple times, the organism as a whole survives the treatment and grows back with a vengence.

Guard® Anti-M 24 penetrates deep into the biofilms and disrupts metabolism at the cellular level. This effectively starves the micro-organism. The end result is that the growths will die off completely, roots and all. Further, residuals of Guard® Anti-M 24 will remain in the substrate and will therefore inhibit germination of spores that blow in for up to 3 years.

Use Guard® Anti-M 24 as an Antimicrobial Treatment Prior to Sealing

A diluted solution of 1 part Guard® Anti-M 24 to 1 part water can be applied to porous substrates before applying sealers or paints. This will impart antibacterial and antimicrobial properties to the coating applied over it. Just be sure to let the pretreatment solution dry thoroughly before applying the sealer or paint.

Sealing with a product from the ImperGuard, or ProtectGuard range will keep porous substrates dry and clean. This will prevent organic regrowth for over 10 years.

Additional information

Weight 5 kg


Guard Industry



Surface Area

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  • Curative and preventative
  • Long-lasting effect
  • Chloride and solvent-free
  • Multi-purpose, can be used on all surfaces and materials
  • Does not change materials

Tools Required

  • Apply using a low pressure sprayer


Preparing the material:

  • If the material has lots of growth, brush it before application.


  • Anti-M Guard® 24 is ready to be used. Always test on the material before application.
  • Apply in dry weather to dry or slightly damp material, spraying until the material is saturated.
  • Let it take effect for 10 to 15 days. Warning, if applying in cold weather (below 10 °C), the action shall be slower.
  • Eliminate residue by brushing, washing or let time and adverse weather do its work.
  • In the event of rain within 48 hours of treatment, it may be diluted and need to be renewed.
  • As part of preventative treatment before painting, Anti-M Guard® 24 can be diluted by 1 part product to 1 part water and be sprayed on the material to be painted.
  • Paint can only be applied after the material has dried fully.


  • Guard® Anti-M 24 is applied outdoors to all types of material, including terra cotta, slate, concrete, natural stone, asphalt, surfacing, wood, composite or synthetic materials, glass, fabrics, etc.
  • Guard® Anti-M 24 is totally universal. It can therefore be used to treat roofs, walls, balconies, fountains, monuments, fences, railings, decking, flagstones, boat hulls, awnings, tennis courts, etc.

Data Sheets

Safety Data Sheet

 Technical Data Sheet

1 review for Guard® Anti-M 24 – Moss, Algae and Mould Remover

  1. 4 out of 5

    Joachim (verified owner)

    Verified reviewVerified review - view originalExternal link

    Good Product easy to use, recommended. Works well on concrete slabs, bricks and tiles.

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