QUALITY DESCRIPTION

TYPE A

Allowed

  • Healthy knots with a diameter of 5 mm .;
  • Sort by color;
  • Plastering under the color of the shield.

Not allowed

  • Open knots;
  • Sapwood;
  • Mechanical defects;
  • Rot, cracks, discoloration.

TYPE B

Allowed

  • Healthy knots up to 25 mm in diameter;
  • Natural differences in color;
  • Sapwood up to 20% of the shield area;
  • Plastering under the color of the shield.

Not allowed

  • Open knots, cracks;
  • Mechanical defects;
  • Rot, cracks, discoloration.

SPECIFICATION

type Solid
species Oak
quality A/B
  glue  class D3/D4
thickness  18-45 mm.    
width 100-1300 mm.
length 700-3000 mm.