Fire retardants
Our fire retardants Texterior and Ultra have highest class B-s1,d0 (corresponds to Class 0 in British Standards). In essence they both
are water-based impregnants, the difference is in active substances.
Fire retardant for Accoya
Accoya is a world’s leading high performance wood. Created from sustainably-sourced wood, Accoya undegoes a proprietary acetylation process that permanently modifies the wood to the core. The result: an environmentally friendly solid wood with durability, dimensional stabilIity and beauty that matches or exceeds even the best tropic hardwood.
But the acetylation process does not turn the Accoya fire-proof – it burns in the same way or even better than ordinary wood. Being a ‘special wood’ also requires a special fire retardant that must be tested and certified on Accoya. Fire retardants meant for ordinary wood do not work on Accoya, and their certificates do not apply for Accoya.
Thermally modified wood is wood that has been modified by a process of wood being heated (> 180 °C) in absence of oxygen inducing some changes to the chemical structures of cell wall components (lignin, cellulose and hemicellulose) in the wood in order to increase its durability and dimensional stability. But all this does not turn thermowood fire-proof.
Thermo-treated wood suits well for interior and exterior cladding, terraces and floors, furniture and furnishing. But being a wood with altered properties means also that making thermowood fire-proof requires a specific fire retardant, tested and certified on thermowood. The certificates issued for regular wood do not apply on thermowood.
