KLH solid cross-laminated timber boards are offered in 3 standard surface qualities. Special surfaces are possible on request and depending on availability and technical feasibility.

Non-visible quality (NSI):
This quality is exclusively recommended for non-visible components, planked from both sides. Spruce laminates of strength class C 24 and in low proportions C 16 according to approval are used for the production of boards in non‐visible quality.

Visible industrial quality (ISI):
As a standard, this quality is executed in a one-sided manner. A double-sided version of this surface is available on request. This quality is suitable for industrial surfaces, but not for visible surfaces in living areas. One-sidedly sorted spruce laminates of B quality are used, in some cases finger-jointed.

Living space quality (WSI):
Living space quality boards are either glued laminated block-boards at customary widths of 1.25 m or glued finger-jointed laminates of AB quality. As a standard, the face side of this board is in living space quality – boards in living space quality on both sides can be produced on request.

Special surfaces (S):
Scots pine, Douglas fir, Swiss stone pine, fir and other surfaces on request and depending on availability of the raw laminates.