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. |