QUALITY CLASS

3 Layer – LARCH

Quality class A (A according to EN 13017-1):

Joint-tight surface, plain to slightly coarse wood, healthy firmly grown knots, isolated black dotted knots permitted, occasionally light compression wood occurring, small proportion of pith portions possible, slight colour deviations permissible, slight cracks at the edges of the panels permissible, natural knot dowels, resin pocket and resin gall repairs permitted to a greater extent, sapwood permissible in isolated cases (for pine, larch and Douglas fir), overall homogeneous wood appearance.

Quality class B (B avg. EN 13017-1):

Joint-tight surface, strong and pronounced wood pattern, larger knots and resin pockets permitted, increased repairs with natural knot plugs and resin patches possible, compression wood, slight discoloration, sapwood (for pine, larch, Douglas fir and stone pine) permissible.

Quality class B (B avg. EN 13017-1):

Joint-tight surface, strong and pronounced wood pattern, larger knots and resin pockets permitted, increased repairs with natural knot plugs and resin patches possible, compression wood, slight discoloration, sapwood (for pine, larch, Douglas fir and stone pine) permissible.

Quality class C (C avg. EN 13017-1):

No special quality requirements, discoloration, compression wood, branches, resin pockets and cracks possible on a larger scale, all in all without any special requirements for the surface.