The test was carried out by applying WOCA Diamond Oil and Hard Wax Oil to 21mm oak floorboards. It emerged from the test that the two WOCA products had no effect on the fire reaction of the oak floorboards. The test showed that the wooden floorboards (5mm engineered oak), which had been classified as CFL when untreated, retained their CFL grade after the treatment with WOCA Diamond Oil or WOCA Hard Wax Oil.