Veneer
Grade
Description
Should be smoothly cut and be either 100% heartwood or 100% sapwood,
free from knots, knot holes, pitch pockets, open splits, other open
characteristics and stain. The veneer must consist of not more than two
pieces in 1220 mm (48”) widths and not more than three pieces in wider
panels; and be well matched for colour and grain. When panels are sanded
no sander skips are permitted.
Must be firm, smoothly cut and free from knots, pitch pockets, open splits and
other open characteristics. If consisting of more than one piece, they must be
well jointed. When panels are sanded, no sander skips are permitted.
Must be solid and free from open characteristics and broken grain, except as
permitted e.g. where there are knots or splits.
Improved C veneer. Touch sanded may be fully sanded
D Grade veneers are not permitted in Exterior grade panels
N (rarely
produced)
A
B
C
C-plugge
d
D
A
B
C
C-plugged
D
Knots
Open
knots/holes
Splits
Grain
Repairs
Knots
Open
characteristics
Splits
Repairs
Sander skips
Tight knots
Knot/ open
holes
Splits
Repairs
Discolouration
Open
Tight knots
Splits
Broken grain
Repairs
Knots
Open knots/
holes
Splits
Broken grain
Not allowed
Not allowed
Not allowed
Smooth
May be a max of 18 wood parallel to the grain or synthetic
25.4mm (1”). Must be sound & tight
1.6mm (1/16”)
0.8 mm (1/32”)
permitted (unlimited) wood or synthetic
permitted up to 5% of panel
Up to 38.1mm (1-1/2”) no limit
25.4mm (1”) max. With an occasional up to 38.1 mm (1-1/2”) across grain
Measured at 203mm (8”) from panel end – not to exceed 12.7mm (1/2”) in
width by ½ panel length...
Permitted in wood or synthetic
Permitted
6.4 mm (1/4”) x 12.7mm (1/2”)
Up to 38.1mm (1-1/2 “)
Limited to 3.2mm (1/8”) width
Permitted but limited
Synthetic and wood permitted
Up to 63.5mm (2-1/2”) width across grain. Occasional tight knot up
to76.2mm (3”)
Up to 63mm (2-1/2”) width across grain
Measured at 203mm (8”) from panel end, not to exceed 25.4mm (1”)
tapering to not more than 1.6mm ...
Permitted
When not exceeding 203mm (8”) length width of wane may be up to
76.2mm...