The ‘Finesse’ category consists of wood presenting few and small knots, each no larger than 5 mm in diameter. The planks have a uniform colour, with only slight variations in structure. Finesse planks do not contain any sapwood (the outermost part of a trunk or branch which typically is lighter in colour).
The knots in ‘Nature’ planks can be up to 20 mm in diameter and are slightly more numerous than in a ‘Finesse’ floor. Stained products in this category can contain sapwood, while non-stained flooring won’t. Variations in colour and structure are allowed, but remain rather subtle.