The basic principle is that the wood should not contribute to fire, and should ensure minimal energy and smoke development.
The wood as such never becomes noncombustible, this is not possible. This is important to understand because there are operators who claim that their fire protection makes the wood noncombustible (type A2-s1, d0) which is completely impossible when wood is combustible.
Fire is a phenomenon that occurs when a gas undergoes an exothermic reaction involving combustion of a combustible, in this case the wood.
The combustion that occurs in the contact area is greatly reduced when Woodsafe PRO™ or Woodsafe Exterior WFX™ is activated via the occuring heat.
The chain reaction that starts in the fire protection forms water that lowers the temperature of the contact surface and carbon dioxide that consumes the combustible pyrolysis gases that occur. As a consequence, the wood as such will only become decoloured (as if it were soaked) and not contribute to the spread of fire.
To compare Woodsafe and fire protection paint, fire protection paint or fire protection varnish does not improve or alter the wood's ability to burn.
Wood products painted with fire protection paint still have property D-s2, d0, but there is thus a paint layer with property B-s1, d0.
The crucial difference is that Woodsafe is FR-treated to Euro class B-s1, d0 while fire-painted wood panelling is covered by a film coating B-s1,d0 on substrate D-s2,d0.
Each individual type of wood has a verified fire class
The wood itself has fire protection B-s1, d0 or B-s2, d0
Does not generate a film-forming layer
Preserves structure, feeling and shade
Suitable for tough use e.g. corridors, gyms, sports halls
Fire-resistant paint varnish
Generates a film-forming layer B-s1, d0
The wood is still D-s2, d0
Affects structure, feeling and shade
Sensitive to natural movement of the wood
Sensitive to wear and tear
Limited life, must be renewed
Exterior WFX Technical brochure
The use of fire-protected wood in an exterior environment places high demands on the properties of the fire protection agent to withstand rain, cold, heat, etc. SS-EN16755 EXT is a requirement for exterior application.
Woodsafe Magazine is published twice a year and summarizes the latest news, trends, presents projects and discussion forums on the topic of fire protection of wood materials.
Woodsafe instructions, routines, quality assurance in production are quality assured in accordance with ISO 9001: 2015 through notified body RISE (0402)
Woodsafes systematic sustainable environmental work is quality assured in accordance with ISO 14001: 2015 through notified body RISE (0402)