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Home > Quality Standards > Engineered Wood Flooring
  
  
  
Oak/Ash | Maple/Birch/Beech | Kempas/Merbau/Jatoba | Walnut/Cherry | Bamboo
  
[G] look up term in glossary.

Bamboo  
Location Defects

Grade A

Grade B

Grade C

Face Veneer Live knot [G]

Diameter ≤ 2 mm; sparse

Diameter ≤ 10 mm; sparse

Diameter ≤ 15 mm; sparse

Dead knot [G]

Not allowed

3 allowed, diameter ≤ 2 mm

3 allowed, diameter ≤ 8 mm

Sapwood [G]

Allowed

Allowed

Allowed

Colour variation [G]

Slight

Slight

Natural and harmonic

Rot [G]

Not allowed

Not allowed

Not allowed

Inbark [G]

Not allowed

3 allowed, length ≤ 20 mm; width ≤ 3 mm, natural

2 allowed, length ≤ 40 mm, light

Pith [G]

Not allowed

Not allowed

Not allowed

Fungus [G]

Not allowed

Not allowed

Slight

Retrorse veins

Not allowed

Slight

Allowed

Crack [G]

Not allowed

Not allowed

Width ≤ 0.2 mm; length ≤ 20 mm(mending)

Veins

FQ mixed

FQ mixed

FQ mixed

Brown line [G]

Not allowed

Not allowed

Allowed

Dimension shortness

Not allowed

Not allowed

Not allowed

Glue stains

Not allowed

Not allowed

≤ 0.5% of plank's area

Wormholes [G]

Not allowed

Not allowed

Not allowed

Indentation

Not allowed

Not allowed

Slight

Discolouration [G]

Not allowed

Not allowed

Slight and natural

Resin pocket [G]

Not allowed

Not allowed

Length > 1 mm

Wane [G]

Not allowed

Not allowed

Not allowed

Bamboo abnormity

Not allowed

Not allowed

Slight

Face veneer gap Transverse

0.1 mm

0.2 mm

0.2 mm

Lengthwise

0.1 mm, length > 10 mm

0.2 mm, length > 200 mm

0.2 mm, length > 300 mm

Middle Layer Middle layer gap

3 mm

3 mm

3 mm

Rot [G]

Slight, no fall off

Slight, no fall off

Slight, no fall off

Tongue missing

≤ 20 mm (cumulative); ≤ 1% of plank's length

≤ 20 mm (cumulative); ≤ 1% of plank's length

≤ 30 mm (cumulative); ≤ 3% of plank's length

Destruction of ends

Not allowed

Slight

≤ 2 mm each end

Back Veneer Bore hole

Diameter ≤ 30 mm

Diameter ≤ 30 mm

Diameter ≤ 30 mm

Dead knot [G]

No fall off

No fall off

Allowed

Wormholes [G]

Slight

Slight

Mild

Inbark [G]

Slight

Slight

Allowed

Cymbate and round mending

≤ 5% of plank's area

≤ 10% of plank's area

Allowed

Dry crack

Slight

Slight

Length ≤ 1000 mm; width ≤ 10 mm

Lack of sanding

Slight

Slight

Allowed

Varnish Putty mending mark

Not allowed

Not allowed

Slight

Varnish stains

Not allowed

Not allowed

Slight

Light not even

Not allowed

Not allowed

Slight

Varnish protruding over the edge

Not allowed

Not allowed

Slight

Scratches /Exposed undercoat

Not allowed

Not allowed

Slight

Varnish not even

Not allowed

Not allowed

Slight

Others Tongue deflection

Not allowed

Not allowed

Not allowed

Roughness of the tongue and groove

Not allowed

Not allowed

Slight

Wanting arris

Not allowed

Not allowed

Slight

Joining of tongue and groove

Good fit

Good fit

Good fit

Cup warping concave [G]

Chord ≤ 0.15% of plank's width

Cup warping convex [G]

Chord ≤ 0.20% of plank's width

Bow warping concave [G]

Irrespective of grading:

  1. Tongue and Groove with top veneer ≤ 1 mm: Chord ≤0.5% of plank's length
  2. Tongue and Groove with top veneer > 1 mm: Chord ≤0.2% of plank's length
  3. Glue-less system with top veneer > 1 mm: Chord ≤0.2% of plank's length
Bow warping convex [G]

Irrespective of grading:

  1. Tongue and Groove with top veneer ≤ 1 mm: Chord ≤1.0% of plank's length
  2. Tongue and Groove with top veneer > 1 mm: Chord ≤0.8% of plank's length
  3. Glue-less system with top veneer > 1 mm: Chord ≤0.4% of plank's length
Height difference

0.1 mm

0.15 mm

0.2 mm

Roughness of ends

Not allowed

Not allowed

Slight

Tolerance on Dimensions

Length (+/-) 1 mm,Width (+/-) 0.1 mm,Thickness (+/-) 0.15 mm,Gap 0.2 mm

FQ stands for Flat Sawn and Quarter Sawn

  
  
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