Only pin knots up to 5 mm diameter allowed, limited to 3 knots per board.
No bark pockets, splits or worm holes allowed.
No edge sap allowed, limited core sap up to 5 % of total volume.
Natural variation allowed, no dark heart wood allowed.
Highest quality timber with only a very rare occurrence pin knots.
Healthy knots up to 55 mm diameter, Filled cracked knots up to 55 mm diameter, Filled dead knot holes up to 20 mm diameter allowed, joinery repaired knots may be used, Total number of knots unlimited.
Limited small bark pockets allowed, End splits up to 1 mm in width and 100 mm in length allowed, limited to 20% of total volume No worm holes allowed.
Limited edge sap to 30% of total volume allowed, limited core sap to 15 % of total volume.
Natural variation, small amounts of dark heart wood.
Clear colour variation and more vivid timber structure.
Rustic Wooden Floor Grade (Lowest of the wooden floor grades)
Healthy knots up to 70 mm diameter, Filled cracked knots up to 70 mm diameter, Filled dead knot holes up to 40 mm diameter, joinery repaired - no more than 55 mm allowed, Total number of knots unlimited.
Limited small bark pockets allowed, End splits up to 2 mm in width and 200 mm in length allowed, limited to 35 % of total volume No worm holes allowed
Edge sap and core sap unlimited
Natural variation allowed, small amounts of dark heart wood allowed General description Standard rustic grade with a nice selection of natural knots and defects
Please note that wood is a natural product and up to 5% of the material provided may not adhere to these grade rules. If you require further clarification on how wooden floor grades will look like please ask for further reflective samples.