Oak AA grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The elements must be pre-selected according to wood structure and uniform colour. |
| Way of cutting | Horizontal and quarter cut cutting is allowed. Mirror maximum in 5% is allowed – preferably only one side. The fibres must be straith. |
| Sapwood | Not allowed |
| Pith | Not allowed |
| Bark pocket | Not allowed |
| Colour variation | Not allowed |
| Cross grain | Not allowed |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 2 mm diameter and maximum 2 pieces/ running meter is allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak AB grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The elements must be pre-selected according to wood structure and colour. |
| Way of cutting | All cutting direction is allowed. Mirror maximum in 10% is allowed – preferably only one side. The fibres must be straith. |
| Sapwood | Sound and not discoloured sapwood on the B side is allowed. |
| Pith | Not allowed |
| Bark pocket | Not allowed |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Slighty cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 5 mm diameter and maximum 2 pieces/ running meter is allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak AC grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The elements must be pre-selected according to wood structure and colour. |
| Way of cutting | All cutting direction is allowed. Mirror maximum in 20% is allowed. |
| Sapwood | Sound and not discoloured sapwood on the C side is allowed. |
| Pith | Not allowed |
| Bark pocket | Not allowed |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Slighty cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 5 mm diameter and maximum 2 pieces/ running meter on the A side is allowed, Sound knots maximum 20 mm diameter and black knots maximum 5 mm diameter on the C side is unlimited allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak BB grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The elements must be pre-selected according to wood structure and colour. |
| Way of cutting | All cutting direction is allowed. Mirror maximum in 10% is allowed – preferably only one side. The fibres must be straith. |
| Sapwood | Sound and not discoloured sapwood on both sides is allowed. |
| Pith | Not allowed |
| Bark pocket | Not allowed |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Slighty cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 5 mm diameter and maximum 2 pieces/ running meter is allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak BC grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The elements must be pre-selected according to wood structure and colour. |
| Way of cutting | All cutting direction is allowed. Mirror maximum in 20% is allowed. |
| Sapwood | Sound and not discoloured sapwood on both sides is allowed. |
| Pith | Not allowed |
| Bark pocket | Not allowed |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Slighty cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 5 mm diameter and maximum 2 pieces/ running meter on the A side is allowed, Sound knots maximum 20 mm diameter and black knots maximum 5 mm diameter on the C side is unlimited allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak CC+ grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The material has been produced from sound logs. |
| Way of cutting | All cutting direction is allowed. Mirror is unlimited allowed. |
| Sapwood | Sound, slightly discoloured sapwood both side is allowed. |
| Pith | Thouch os pith on both sides is allowed as long as the crack along the pith is not exceeding 1 mm. |
| Bark pocket | Bark pocket is up to 50 mm lenght allowed and maximum 2 pieces/ running meter. |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Not allowed |
| Knots | Sound knots maximum 20 mm diameter and black knots maximum 5 mm diameter on the C side is unlimited allowed, sound knots maximum 30 mm diameter and black knots maximum 10 mm diameter on the C+ side is unlimited allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
Oak DD grade Finger jointed and continious stave boards
| Wood Defects | Approved defects and tolerances |
|---|---|
| General | The material has been produced from sound logs. |
| Way of cutting | All cutting direction is allowed. Mirror is unlimited allowed. |
| Sapwood | Sound, slightly discoloured sapwood both side is allowed. |
| Pith | Thouch os pith on both sides is allowed as long as the crack along the pith is not exceeding 1 mm. |
| Bark pocket | Bark pocket is up to 100 mm lenght allowed and maximum 2 pieces/ running meter. |
| Colour variation | Natural colour variation is allowed, however, not decay and grey. |
| Cross grain | Cross grain is allowed as long as it does not have negative impact for the further processing. |
| Insect damage | Small insect holes are allowed, however, not living insects. |
| Knots | Sound knots maximum 40 mm diameter and black knots maximum 20 mm diameter on the is unlimited allowed. |
| Crack | Not allowed |
| Decay | Not allowed |
