| Categories of defects |
Permissible amount of defects
|
| Sound intergrown knots |
Permitted
|
| Other knots and knot holes |
Permitted up
to an individual maximum diameter of 40 mm
|
| Repaired Defects (inserts) |
Permitted
|
| Double Inserts |
Permitted
|
| Closed checks |
Permitted
|
| Open checks (patched) |
Permitted
for an individual maximum width up to 10 mm
|
| Irregularities in the structure
of the wood |
Permitted
|
| Hearth and discoloration |
Permitted
|
| Defects at the edges due to
sanding or sawing |
Permitted up
to 5 mm from the edge
|
| Glue penetration |
Permitted
|
| Sanding through |
Permitted
|
| Hollows, bumps, imprints, roughness |
Permitted
|
| Inner piles veneer overlapping |
Permitted
|
