The short boards are already prepared for herringbone laying (90 ° angle) and are therefore delivered with 50% tongue on the left side and 50% tongue on the right side. The herringbone floorboards are only available with fix dimensions.
Oak plank in 3-layer construction with large bevel on all sides 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. End cracks, stress cracks and knotholes up to 30 mm are permitted and sealed with appropriate putty. Variations in color and sapwod are characteristic. Small open cracks and unsealed spots of a few millimetres are permitted.