Is what it says it is: several layers of wood (in some cases cross-layered) bonded together to create a really strong core board that is then topped off with a solid wood top layer (lamella) of around 5mm of pretty much any species of wood you can imagine.
Is just that: whereas normally modern flooring is manufactured to widths of around 1 20/1 50mm, a wide plank can be anything from 225mm and wider.
Graded face allows slight to medium colour variation, live knots below 20mm, dead knots below 5mm, dark/black streaks about 3mm x 5mm. Sap 10% of the face area allowed.
Graded face allows a natural colour variation, live knots allowed, dead knots below 15mm, dark/ black streaks 5mm x 10mm, putty filler may be used as long as the colour is similar to the overall tone of the wood. Sap 20% of the face area allowed.
As C grade but with knots up to 40mm and up to 30% sap across the face area.
A B & C grade
A mixture of C and D grades.
Character Nature & Manor
A natural mix of ABCD grades
Unfinished French Oak
Attractive grain, sound knots up to 20mm (20p piece). Maximum of 2 knots per linear metre of board.
Attractive grain, sound knots up to 40mm on face, occasional clusters of small knots (“cats paw”), some filling may be required, good ratio of prime quality boards.
As character grade but with a higher percentage of larger knots and natural characteristics, some additional filling may also be required.
Very rustic (as it comes). Colour variation and all defects allowed.