Wood flooring is graded by the manufacturers according to its appearance.
Please find below a hardwood floor grade guide to help you to determine the decorative finish that best suits you:
Grade A or Prime
- The face should be defect free
- No Sapwood allowed
- No Heart wood allowed
- No blue stain or cracking allowed
- Small health knots up max diameter of 5.4mm
- Uniform Colour with small, limited character marks
Grade B or Nature / Select
- Small streaks & burls allowed
- Slight imperfections
- Black lines allowed
- Black coloured knots up to max diameter of 2.5mm
- Healthy knots up max diameter of 5.4mm
- Slight colour variation
Grade C or Rustic
- Sapwood allowed on the face
- Streaks, pin worm holes & burls allowed
- Imperfections & knots allowed (max diameter of 35mm)
- Black / White coloured knot repair / Filler allowed
Grade D or Country
- More markings than grade C allowed
- Light & dark colours
- Knots & other chamfer marks allowed
- Heavy streaks, checks, worm holes, heart-wood, stains allowed
- Unlimited sapwood & knots
Taken from the perimeter of the trunk is DE Grade Timber. This grade celebrates the more rustic features of Oak; Large colour variations, Filler, Knots, Cracks and Sapwood, are common and all can be present and permissible whilst creating a characterful and dramatic floor when laid