Grade Classifications


Timber grading is by visual inspection and is a judgment of appearance and suitability to end-use, considering the natural characteristics of each piece. 

Grades have been classified according to the New Zealand Timber Grading Rules, Group1: Native Softwoods
Appearance grades of timber shall be determined from the better face and edge of the piece. The reverse face may be one grade below the better face.

Please note:  Regenerated Totara is a natural product, variations in grain, pattern, colour and/or texture are common and are not considered defects.
Regenerated Totara naturally contains more feature than old growth trees, please allow for some additional defects below grade.

Clear Grade (C) (Equivalent to NZ Standards Clears Grade)

In any piece the following defects only shall be permitted:

  • Resin streaks 1 x 5mm wide x 100mm long
  • Stain, insufficient to impair a natural finish
  • Surface checks 3 x 0.5mm wide x 50mm long

Sustainable New Zealand totara timber - Clear Grade

Sustainable New Zealand totara timber - Clear Grade

Sustainable New Zealand totara timber - Clear Grade

  

Feature Grade (F): (Equivalent to NZ Standards Building Grade)

In any piece the following defects only shall be permitted:

  • Bark or resin pockets 20mm x 200mm long
  • Checks not restricted
  • Cup not restricted
  • Holes and all knots (except spike knots) singly or in groups; one-third of the cross section in pieces not exceeding 150mm wide, one-quarter of the cross section in pieces over 150mm wide.
  • 'Kaikaha' pittings, depressions, or chanels on the surface not exceeding 2mm deep, holes onhe end grain not exceeding 5mm diameter and 20mm apart.
  • Resin-streaks on the face one-fifth of the width, one-third of the length.
  • Shakes and through shakes,one-fifth of the length, slope across the face 1 in 15.
  • Sloping grain 1 in 8.
  • Spike knots and double spike knots, length equal to the width of the piece
  • Stain insufficient to obscure the grain
  • Wane, one-quarter of the width on the face, one quarter of the thickness on the edge
  • Warp:
  • Woolly or raised grain not restricted

Sustainable New Zealand totara timber - Feature Grade

Sustainable New Zealand totara timber - Feature Grade

Sustainable New Zealand totara timber - Feature Grade

 

Box Grade (B): (Equivalent to NZ Standards Box Grade)

  • Any number of combination of defects shall be permitted provided that the piece shall hold together in the course of normal handling.

 Sustainable New Zealand totara timber - Box Grade