Heat treatment fully colours black alder into a beautiful brown and it achieves a stylish hardwood-like surface and a pleasant scent. At the same time the wood becomes harder and more durable and it does not swell or twist over time.
Heat treatment also allows the capacity of black alder’s thermal insulation to further improve, so it does not feel hot. Its moisture, weather and decay resistance also improves.
Due its characteristics, heat-treated black alder is suitable for interior and exterior cladding, outdoor structures as well as for saunas and wet rooms. The wood can be freely painted or surface-treated.