Acacia wood with consistent colouring resulting from special heat treatment (without chemical additives). Acacia plank in 3-layer construction with small bevel on long side and approx. 4 mm top layer, with approx. 4 mm backing in the same wood and middle layer conifer. Tongue and groove on all sides for easy installation. Sealed cracks up to max. 25 cm, knots and filled repaired spots up to 25 mm diameter are possible.