No coating is required to counteract leaching
To maintain the fire reaction class of the wood after weathering, no protective coating needs to be applied in exterior applications. Combined with the ecological fire retardant, Burnblock®, this ensures that your project complies with the required standards.
Durability according to BS EN 16755: 2017 standard
For this purpose, tests are being carried out in accordance with EN927-6, one of the three test options within the new BS EN16755:2017 standard. The test comprises an accelerated weathering process with UV and the equivalent of over 120 years of rain in Belgium.
The tests are carried out on ThermoWood® pine and Western Red Cedar and both retained reaction to fire class B, both before and after accelerated ageing, in accordance with test method ISO 5560-1: 2015.
Reaction to fire class B remains
The following applies to the durability of timber products treated with Burnblock® fire retardant using a vacuum/pressure:
The effect of the fire retardant characteristics decreases at a speed equal to the degradation/ageing of the timber itself.
This means that the effective level of fire retardant per unit of timber remains unchanged, thus allowing Burnblock® to retain the reaction to fire class B.
Registered office
Zuiddokweg 44
9000 Ghent
+32 9 255 58 88
gent@lemahieu.be
Registered office
Zuiddokweg 44
9000 Ghent
+32 9 255 58 88
gent@lemahieu.be
Production site
Vergunningenstraat 6
8400 Ostend
+32 59 33 99 99
oostende@lemahieu.be
Production site
Vergunningenstraat 6
8400 Ostend
+32 59 33 99 99
oostende@lemahieu.be
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