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+49 (0) 6253 / 2394 -0

FAKOLITH FK 12 – Cleaner for the treatment of substrates infested with mould, bacteria, algae and moss.

Intended use

FAKOLITH FK 12 is an aqueous concentrate for cleaning mould, bacteria, algae and moss-infested surfaces indoors and outdoors. Dilute 1:2 – 1:4 with water. Used pure, FAKOLITH FK 12 is also suitable for dissolving out salts that are harmful to the building from the front masonry.

FAKOLITH FK 12 neutralises odours and delays the formation of new bacteria.

Material base

  • Aqueous cleaning concentrate based on formic acid

Product features / properties

  • Concentrate (500 ml spray bottles are already diluted ready for use)
  • Water-based, solvent-free
  • Acid, ph-value 2.5
  • Low odour, acidic
  • Chlorine-free
  • Limescale remover
  • Eliminates musty odours
  • Delays the formation of new bacteria
  • Biodegradable
  • For substrates made of concrete, mineral renders, synthetic resin renders, old coatings, tiles, clinker, natural stone (except marble), etc.


  • Processing from + 2°C
  • Water-dilutable, 1:2 – 1:5
  • Apply with brush, paintbrush, sponge or by spraying
  • Reaction time approx. 15 minutes
  • Rinse with clean water
  • Consumption: Depending on application purpose and intensity of infestation

Container sizes

  • 500 ml
  • 1 L
  • 5 L
  • 10 L

Downloads for the product

FK 12


Ordering, price information and delivery

Would you like to order our products, do you need price information or an offer? Contact our sales department by telephone or e-mail. We would be happy to name a sales partner for FAKOLITH products in your region.

FAKOLITH Farben / Sales
Phone: +49 (0)6253 / 23 94 - 23

Information and service

We know our way around mold remediation and the removal of moisture damage. You are a processor and you have questions about product selection, preparation or the use of our FAKOLITH products? Our technical support is at your disposal personally by telephone or e-mail.

FAKOLITH Farben / Technical support
Phone: +49 (0)6253 / 23 94 - 18

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