- Allowed : all kinds of knots, natural discoloration, streaks, curly grain
- Not allowed : rot, false heartwood, pith
- Allowed : false heartwood coming to one face of a board, all kinds of knots, natural discoloration, streaks, curly grain
- Not allowed : false heartwood overrun to the second face of a board more than 30cm, rot.
The photos of the defects correspond to unedged boardы of natural moisture, placed in the section “Unedged board of natural moisture content“.
All dry elements are manufactured from 47 mm dry unedged boards. Therefore the width of the elements is always 47 mm. Thickness can be different and is agreed with the buyer additionally.