The functional coating FN® 3 was developed for maximum efficiency of the air cleaning function (it achieves the highest photocatalytic efficiency of all FN® coatings). It is designed for indoor use, where it is an effective alternative to conventional technologies for air purification.

Effectively removes a wide range of pollutants and odors. It can be applied to surfaces made of concrete, raw masonry, stone, ceramics, plaster and common building surfaces that do not repel water. As a suitable application procedure, we recommend applying the first coat of FN® 2 suspensions and applying the other two coats with FN® 3. Compared to FN® 1 and FN® 2, FN® 3 has a high opacity. We recommend applying the coating to the ceiling and surfaces where there is no risk of damage by abrasion and where it ensures maximum effectiveness.

When using FN® for indoor air purification, FN® 3 coatings are usually applied to the room ceiling and a 1.5 m wide strip of vertical walls from the ceiling. FN® 2 is applied to other surfaces.

FN® 3 cannot be coloured, so it is only available in white.

The functional coating FN® 3 also effectively, long-term and efficiently eliminates viruses and bacteria, fungi, algae and other microorganisms. It is therefore also used as the most effective technology to reduce the risk of disease transmission.


  • Clean air from allergens, viruses, bacteria, toxic substances and odors;
  • Reduces the risk of transmitting infectious diseases, reduces the risk of asthma;
  • Highly effective against fungi and microorganisms;
  • Prevents the deposition of viruses and bacteria;
  • Effective prevention of stumps and mold;
  • Significantly reduces the deposition of grease from the kitchen on furniture, windows and curtains, etc.;
  • It works as a quiet, maintenance-free, economical and highly efficient air purifier;
  • Ecological solution without chemistry – purely physical effect;
  • It maintains high efficiency for a long time with a 10-year guarantee;


The coating is white with a relatively high opacity and its surface chalks. The coating cannot be coloured due to its high photocatalyst content. Transparency approx. 5% – 10%.