The Forestlines® is a revolution in the world of wooden facade cladding.

The circular facade system is the very first in the world to bring untreated wood to fire reaction class B.

​For many years, wood has been the most ecological raw material with many advantages.

​It is a renewable raw material, stores CO2 and much more.

​Unfortunately, product developers keep coming up against its biggest Achilles' heel, its flammability.

​Although there are ways to treat wood with a fire retardant, we did not believe in this ourselves and decided to only work with the untreated natural product.

​After years of scientific development process of trial and error, the Forestlines® façade system was developed.

​A revolutionary, circular system that is the very first in the world to bring untreated wood as the most ecological raw material to fire reaction class B in END-USE in accordance with EN 13501:1-2018.

What is reaction to fire class B?

​If you take into account that the average calorific value of one kilogram of wood is 15.5 MJ (, this means that to achieve fire reaction class B, you can burn a maximum of +- 500 grams of wood after ten minutes in a fire of 800 degrees Celsius.

​Absurd numbers…

What is the difference between B, C, D, E and F?

​Although the letters are right next to each other in the alphabet, there is a world of difference!

  • B: Very difficult to combust
  • C: Flammable
  • D: Highly flammable
  • E: Highly flammable
  • F: Extremely flammable

​Whereas with B you burn a maximum of 500 grams of wood after 10 minutes, with a fire reaction class D there is not much left of the test set-up.


Does Forestlines® always achieve fire reaction class B?

​Our system optimizes each type of wood to its maximum potential.

​How high it can end up depends of course on how low it starts.

​We will also improve cardboard, but of course we cannot achieve reaction to fire class B with this.

What is the fire reaction class of other profiles?

​In general, untreated wood is usually equated with fire reaction class D.

​Some combinations of profiles and types of wood may be able to achieve a fire reaction class C, but these are rather rare.

​There are also several combinations that themselves do not reach the (very) low-threshold fire reaction class D.