Grading
Prime/A.B. Grade Wood Flooring is a mix of A.B grade please see list below
Classic Grade Wood Flooring is mill run grade which is a mix of B.C.D grade with small proportion of A grade.
Country Grade Wood Flooring is a mix of CDE grade
Antique distressed Grade Wood Flooring is a mix of DEF
Grades A-F described
A—without knots and sapwood, uniform colour, sometimes small knots up to max.2mm allowed.
B—with knots up to max.2-4mm, no sapwood, harmonic-natural colour;
C—with knots up to max.6 cm, sapwood max 15%, natural colour;
D—with knots up to 8cm, and max.30% sapwood, allow a wide range of colour variation.
E — with knots up to 10cm, allow cracks up to 30cm in the middle of the boards (max 5mm wide) and end cracks max 25cm (max 8mm wide), allow a wider range of colour variation
F — with crack less than 15-20mm wide in the middle of the boards, longest crack shorter than 80%of the board length
