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LUMBER GRADES
Through good silviculture management, New Zealand pine logs come in a range of qualities capable of yielding lumber grades to meet almost any requirement.
Appearance grades (board grades): for finishing and furniture uses can be either clear of knots or contain minor blemishes and tight knots.
They include:
- clear lumber free of knots and blemishes, used for high quality joinery, furniture and mouldings
- cutting grades for reprocessing to produce shorter clear lengths with excellent machining, and gluing properties. These grades contain large knots and blemishes which are removed by cross-cutting and ripping. The resulting clear components are often finger-jointed and edge-glued to produce mouldings and furniture.
Structural grades (framing grades): used primarily for construction where strength and stiffness are important. The main factor influencing a structural grade is the size and location of knots. Grades limit such defects to meet specified strength requirements.
Industrial Grades: used in packaging for various products such as pallets, cable drums, and concrete formwork. Grades contain a range of knot sizes compatible with the final use.
New Zealand exporters are able to grade to most customer requirements. Common export grades include:
- Australia - Standards Association of Australia F5 and F7 structural grades (visual and machine stress graded)
- United States - Western Wood Products Association random width lumber specifications including mouldings and better, shop and factory grades.
- Japan - JAS structural grade specifications (which also include glue-laminated and plywood grades). Industrial grades are also produced including thinboard and a range of other grades to buyer specification.
| New Zealand Pine Lumber Grades |
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Appearance Grades |
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No. 1 Clears
Suitable for mouldings, furniture, where clear, long lengths are required.
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Front
Back |
No. 2 Clears
Suitable for usage where one clear face, two clear edges are required. |
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Front
Back |
Clear Finger Jointed
Suitable for usage where timber is to be painted. e.g. sills, fascia, windows, or selected use where a clear finish is required. |
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Front
Back |
Dressing Grade
A tight knot grade for use in furniture, paneling, and high quality exterior use. |
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Front
Back |
Manufacturing Grades |
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No 1A Cuttings Grade
Each piece shall yield one 1.8 metre clear cutting, with balance of cuttings averaging 1.0 metre. Minimum of 70% recovery of clear cuttings.
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Two sample boards |
No. 1 Cuttings Grade
Each piece shall yield 70% of its length in clear cuttings 1.0 metre and over.
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Two sample boards |
No. 2 Cuttings Grade
Each piece shall yield 70% of its length in clear cuttings 0.600 metres and over.
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Two sample boards |
No. 3 Cuttings Grade
Each piece shall yield 60% of its length in clear cuttings of 0.200 metres and over. |
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Two sample boards |
Merch Grade
A general utility grade. Economically used for workshop and warehouse shelving, framing for upholstery furniture and fence palings. |
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Two sample boards |
Packaging-Industrial Grade
Suitable for packaging, pallets and other industrial use. |
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Two sample boards |
Random Width Grades |
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Moulding & Better |
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No. 1 Shop
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No. 2 Shop
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Sizes Available for All Lumber Grades
Thicknesses: 25mm, 32mm, 40mm, 50mm, 75mm, 100mm
Widths: 50mm, 75mm, 100mm, 125mm, 150mm, 200mm.
By Special Request: 250mm, 300mm
Lengths: 1.8 metres to 6.0 metres Other Lengths by special request |
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General Information
- Timber is shown machined to clarify appearance. Can also be supplied sawn.
- New Zealand producers will produce grades and sizes to customer requests and customise standard grades to meet specific needs.
- Timber is available in a green sawn, unprocessed state through to kiln dried, machined and cut-to-length products.
- Standard kiln drying is 10 to 12% moisture content.
- New Zealand producers are also able to supply structural grades of lumber.
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