DETAILED DESCRIPTION OF STYLES
Minimal variations in types of wood tones and textures, practically no knots, small, overgrown dotted knots with a diameter of ≤5mm are allowed.
Small variations in wood tone and texture, with small overgrown knots with diameter ≤20 mm. One of the most popular styles, as it is a compromise between highest class boards and knotted floorboards (Riviera and Wild).
Various wood tone and texture variations, open knots, and knots with fixed with putty ≤25 mm. No large cracks. No sapwood is allowed (lighter strip along the edges of the boards). The Riviera style also includes various combinations of all other styles provided with the top layer of the oak stitched from 2 pieces of veneer.
Various shades and texture variations of natural wood, big amount of knots, filled knots ≤75 mm, as well as cracks of various sizes (fixed with putty). This style perfectly embraces the natural difference of oak shades and textures.