Timber Grading

Mortlock timber grades its timber to standard and better grade (also called natural select grade) in accord with AS 2796.2-2006. Standard and better grade consists of 2/3 select grade and 1/3 standard grade. Standard and better allows timber to show its natural colours and characteristics without compromising consistency. If you require another grade please speak to Mortlock Timber.

Images shown below are to illustrate the timber feature only, it does not mean that your timber will be supplied with feature to the extent of these images.

Gum Veins
Standard grade: Gum veins less than 60 mm wide and 1m long & 2mm deep are acceptable.
Select grade: Gum veins less than 2mm wide, 250mm long, and 1/2 length in total are acceptable.

Borer Holes
Standard grade: Borer holes less than 24 per 900mm depending on timber width are acceptable.
Select grade: Borer holes less than 10 per 900mm depending on timber width are acceptable.

Tight Knots
Standard grade: Tight Knots less than 1/3 the board width up to a maximum of 40mm are acceptable.
Select grade: Tight Knots less than 15mm wide are acceptable.
Note: Vacoa Timber is a knotty grade, the tight knot grading rules do not apply to Vacoa.

Checking
Standard grade: Checks less than 2mm wide & 250mm long are acceptable.
Select grade: Checks less than 1mm wide & 250mm long are acceptable.