KD-3
Impregnated decking boards for durable outdoor use
Enjoy the elegance and comfort of natural wood with every step.
Decking boards made from carefully selected spruce or pine and impregnated for durable outdoor use provide a harmonious appearance and a pleasant feeling when walking barefoot. High-quality AB and BC grade material, free of loose knots and dried to an optimal moisture content of approximately 18%, ensures excellent stability, long service life, and an attractive appearance in outdoor conditions.
Material selection
Spruce
Pine
Available grades
AB Grade - Good Visual Quality
Knots: Allowed and mostly sound (black knots up to 15 mm).
Cracks: Small cracks along the grain are permissible. On the visible side of the board, cracks up to 10 cm are allowed; on the reverse side, cracks may extend up to 25% of the board length. Cracks must not penetrate through the board.
Resin pockets: Small resin pockets (up to 50 mm) are acceptable.
Colour: Slight variations in shade are acceptable.
Bruising: Minimal and only local.
Defects: Rot and insect damage are not permitted. Through-cracks are allowed only at the ends of the board and must not exceed the width of the board.
BC Grade - Medium Quality Material
Knots: Larger knots are allowed and unlimited in number; some may be loose or missing.
Cracks: Cracks along the grain are permissible (up to 30% of the total board length), as well as through-cracks up to 1 m.
Resin pockets: Acceptable.
Colour: Uneven colour tones are acceptable.
Bruising: Permitted to a greater extent.
Defects: Loose or missing knots, breaks, and mechanical damage are permissible. Small knots affected by rot or insect damage are also allowed.
Surface treatment types
Smoothly planed surface
Post-processing
Fungal protect
Impregnation
Fire-retardant
Thermowood
Wood staining
Oil finishing
