In order to measure the durability of the fire performance of Burnblock in wood with uncoated surface, two series of tests have been performed:
- A hygroscopic test that measures the impact of moisture in wood impregnated with Burnblock. The test used is the one described in EN16755:2017 and is related to different classes of wood products in interior and exterior end use applications.
- An accelerated weathering test with reaction-to-fire performance of wood impregnated with Burnblock. The tests used are described in EN16755:2017. The accelerated weathering test is following EN927:6. EN 927-6 which includes exposure of wood to artificial weathering using fluorescent UV lamps and water.
The fire performance tests before and after the accelerated weathering tests have been made according to ISO 5660-1:2015. ISO5660-1 is a reaction-to-fire-test measuring heat release, smoke production and mass loss rate. According to the fire behaviour in the standard EN13501-1 the total heat release (THR) can reach a max. of 7,5 (MJ).