Woodsafe® is based on a fundamental principle of fire science: enhancing wood's natural protective mechanism throughcontrolled charring. When wood is exposed to heat, it naturally begins to decompose through a process known as pyrolysis. In untreated wood, this process releases combustible pyrolysis gases that can ignite and contribute to continued fire growth.
Through Woodsafe's industrial fire-retardant treatment, this process is fundamentally modified. The fire-retardant chemicals integrated into the wood's cellular structure are activated by heat and promote thermal decomposition towards the rapid and stable formation of a protective char layer. At the same time, the generation of combustible pyrolysis gases is reduced, limiting heat release.
The resulting char layer acts as a natural thermal barrier. It insulates the underlying wood, slows heat transfer, and reduces the availability of fuel to the fire. The result is a slower and more controlled fire development, with delayed ignition, reduced flame spread, and lower heat release compared with untreated wood.
It is therefore important to understand that charring is not an indication that the fire protection has failed. On the contrary, the enhanced and stable formation of the char layer is an intended and verified protective mechanism. The char layer is an active component of the wood's fire resistance, helping to protect the structural timber during fire exposure.
Woodsafe® does not change the fact that wood is a combustible natural material. What it changes is how the wood behaves when exposed to fire. By influencing the wood's thermal decomposition, Woodsafe creates the conditions for more predictable fire behaviour and documented improvements in fire performance. This functionality is verified through standardized fire testing and classification in accordance with applicable European and international testing standards.
