Only high-quality materials are processed at Roland Kohler GmbH. Nevertheless, some principles must be observed to ensure the appearance and functionality of the furniture for as long as possible.

Solid wood

We only use wood that comes from sustainable forestry and is certified according to FSC or PEFC.

All woods change colour under the influence of sunlight. Therefore, it should be avoided to expose solid wood to constant intense sunlight. Solid wood can be stained or varnished. In the case of staining, the wood (beech) retains its structure. Slight differences in colour can occur even with careful treatment. Only water-based stains are used. In the lacquered version, the structure and grain of the wood is completely covered. The lacquers used have a silk matt sheen.

High-gloss chrome

High-gloss chrome is very resistant and gives the respective metal part optimum corrosion protection for indoor use. This surface is not suitable for outdoor use (terrace or garden). The layer thicknesses are 14 - 18 my nickel and approx. 0.3 my chrome on straight parts, in bends they can be somewhat lower.


Offered in 12 shades, this is a drum-dyed cowhide leather that has only been lightly covered with dye. This 1.0 - 1.2 mm thick semi-aniline leather is of the highest quality and purely aniline-dyed. It is noble and supple and has a soft feel.

Aniline-dyed leather is open-pored and therefore particularly pleasant to the skin. The development of a patina is unavoidable with heavy use of the furniture. If possible, aniline-dyed leather should only be cleaned with a dry, soft cloth.

Never treat leather with harsh cleaning agents, solvents, wax or shoe polish. Even if special cleaning agents are used, stains on leather covers often cannot be removed without leaving residues. Especially with light and white leather shades, discolouration by textiles is possible. These colour stains are very stubborn and often cannot be removed from the leather due to their unclear chemical composition.

As with any natural product, slight irregularities may occur in leather. Due to the natural stretching ability, wrinkling cannot be ruled out, regardless of the processing method. This is not a reduction in quality and therefore does not constitute grounds for complaint.


Toughened safety glass (ES glass), as used for the RK 12 side table, is characterised by its high impact and bending strength. In the event of breakage, the plate disintegrates into small crumbs, which decisively minimises the risk of injury. Large sharp shards are not produced.

Disadvantages of this design may be minor optical impairments. However, in view of the disproportionately higher safety comfort, these minor visual impairments are acceptable in our opinion.

A pane of glass always breaks by damaging its surface, especially by damaging the edge. From here, cracks can form and, as a consequence, a breakage of the pane can occur, even with a time delay. Therefore, care must always be taken when handling the glass panel. Panels damaged in this way could not survive transport from the factory to the end customer; they would inevitably break due to the vibrations during transport.
For this reason, no liability can be accepted for a broken table top after the table has been used.