OAK Select
Character: Natural colors, prominent grain without harsh color variations. It features minor knots. Flame pattern is permitted only in traces. Tint differences may occur between the parquet stripes. Knot: Knots, up to a diameter of 3 mm are permitted, except for black ones and those in groups. Sapwood: Fundamentally, it is not permitted, but healthy tangential sapwood, up to 3-4 mm in width and 20-30 cm in length, is permissible.
OAK Natur
Character: Course texture and prominent grain having rather dynamic colors but without harsh color variations, with bigger knots. Flame pattern permitted, in a minor degree. Major tint differences may occur between the parquet stripes. Knot: Up to 4-5 knots having a diameter of 20-25 mm are permitted per stripes, except for black knots. Cracked knots are permitted when corrected by filling. Fallen-out knots are permitted, up to 25 mm in diameter when corrected by filling. Sapwood: Fundamentally, it is not permitted, but healthy tangential sapwood, up to 4-5 mm in width and 50 cm in length, is permissible.
OAK Rustic
Character: It is characterized by the sapwood and the knots, as well as its prominent textural and color variations. Flame pattern is permitted. Knot: 5 – 6 healthy and dark knots – even grouped ones – are permitted in each stripe, up to a diameter of 25 – 30 mm. Fallen-out knots are permitted, up to 30 mm in diameter when corrected by filling. Sapwood: Healthy sapwood is permitted up to the third of the slat width, even from both sides.
OAK Nordic
Character: Course texture and prominent grain having wide color variations and minor knots. Flame pattern is permitted. There are tint differences between the parquet stripes. Knot: Up to 2-3 knots having a diameter of 10-15 mm are permitted per stripes, except for black knots. Cracked knots are permitted when corrected by filling. Sapwood: Healthy sapwood is permitted up to the third of the slat width, even from both sides.
OAK Country
Character: It is characterized by the knots and the prominent textural and color variations resulted from the discolorations near the pith. Flame pattern is permitted. Knot: 5 – 6 healthy and dark knots – even grouped ones – are permitted in each stripe, up to a diameter of 40 – 50 mm. Fallen-out knots are permitted, up to 40 mm in diameter when corrected by filling. Sapwood: Not permitted
ASH Natur
Character: Its color is defined by the natural growth of the tree – with darker and lighter stripes. Without any particularly striking, harsh textural and color variations. Knots: Healthy knots up to a diameter of 3 mm, and dark knots up to a diameter of 1 mm are permitted, except for those in groups. Red heartwood: Not permitted.
ASH Rustic
Character: It is characterized by accentuated colors, red heartwood, knots and a vivid texture. Knots: Healthy knots up to a diameter of 20 mm or fallen-out knots up to a diameter of 10 mm are permitted, 2 per stripe. Red heartwood: Permissible, up to the 2/3 of the stripe.
American WALNUT
Character: Unclassified quality. Colorful, knotty material with sapwood and an expressed grain pattern. There are significant variations in grain pattern and tint between parquet stripes. Knot: Knots are permitted, up to a diameter of 40 mm, even filled up. Sapwood: Permitted, up to the one-third of the width.
According to the EN 13489 standard, 3 % of a different grade than indicated is acceptable.