APPEARANCE GRADES
There are three standard finishing grades that may be specified, as defined in AS/NZS 1328 part 1. The appearance grades relate to the aesthetic appearance of the visible surfaces of the glued laminated members. This classification bears no relationship to the structural performance of the timber.
Definition of Appearance Grades
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Appearance Grade
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Description
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A
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This grade is intended for use in applications where appearance of the member is important and clear or painted finishes are used. All surface voids are filled or repaired. Unless it is specified otherwise, the surfaces shall be sanded to a minimum of 60-grit finish.
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B
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The grade is intended for use in painted applications where appearance is important but a planed finish is acceptable. The machining shall conform to No. 2 dressed surfaces grade as defined in AS 2796. Occasional skips in the surface are permissible and minor blemishes, voids and machining want shall be acceptable. The outer-most laminations shall be free of loose knots and voids.
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C
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This grade is intended for use in applications where appearance is not important. All blemishes and voids are acceptable.
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