The durability of Kebony Radiata and Kebony SYP against rot decay conforms to Durability Class 1, the most durable category of the European norm EN 350. Kebony Scots Pine contains some heartwood, which is untreatable and has therefore durability class 1-2 (only treated sap wood). The heartwood naturally falls within the Durability Class 3. The Durability Class ensures Kebony has a long life span. Because of its hardness, Kebony will also be more robust against wear than most other wood types.