Wir machen Holz stark.

Koralan® UL 420

Acrylic and water-based wood scumble for industrial and craft coating of wooden elements for exterior use.


Wood-preserving impregnation, primer and weather protection in one single product Provides preventative protection from blue stain (according to EN 152) and mould infestations (according to EN 15457).

Ideal for the treatment of coniferous wood without ground contact (e. g. exterior cladding, garden timber).

Suitable for spray tunnel method, powder painter, VACUMAT®, brushing, dipping and flow coating.

Approved biocidal product as per Regulation (EC) 528/2012.


  • Low odour, odourless after drying
  • Easy to handle
  • Fast drying
  • Block-resistant
  • Easy to sand

Use biocidal products carefully.
Always read the labelling and product information before use.

Shades on request.

  • Protection against blue stain and mould
  • Container sizes:
    10 l | 20 l | 120 l | 1000 l