Wood-specific treatment

We produce different surfaces to suit the different types of wood we use. The required look and intended use determine the type of surface chosen.


Wild oak / Oak heartwood umato / Oak heartwood nature / Wild nut
A light, water-based wood stain is applied to the full surface of the brushed wood. The surface is then planed so that the lighter coloured stain remains only in the pores and grooves of the wood. Next, the surface is coated with two transparent layers of UV water-based lacquer and finally it is waxed.


Solid reef beech
The sandblasted wood is initially brushed by hand to smoothen out and sand down splinters and excessively rough areas. Another step involves several layers of water varnish being applied in a way that is barely visible, but that protects the wood from external influences. The wax coating is applied as a finish and ensures a velvety, matt gloss.

We treat the surfaces of the different wood with special procedures (schematic representation)

Woods processed in the furniture industry

We employ the following types of wood in our furniture production

Solid reef beech
For reef beech, we exclusively use core boards from the heart of the beech trunk with partially truncated piths. These open piths, which crack during drying, with their brown-coloured edges and intergrown splay knots, dominate the character of this unique type of wood.


Wild oak
In the case of wild oak, we process oak wood that has a particularly natural colour spectrum. It has a striking, brownish, clearly defined and expressive grain. Small knots and innate deviations in colour are what make this wood unique.


Wild nut
Hartmann uses is a special selection of American walnut. It is characterised by its strong natural features, such as its branches that have grown together, core tubes and core cracks. These natural characteristics are actively elected and contribute to the wood‘s aesthetic effect.

Oak heartwood nature

Our oak heartwood nature exclusively consists of core planks made from oak trunks as only this type of wood provides the desired, typical properties, such as core splits and horn knots.


Oak heartwood umato
Planks of wood are first selected from our oak trunk core range for manufacturing our core oak surfaces. These core planks show the typical characteristics, such as core splits and wing loads. The assorted products are then stored before drying for several days in a special chamber are subjected to a smoking process there. During this process, the wood is imbued and gain an even dark colouring. The character of old oak logs emerges.

Paints and wax types

We use paints and wax types in compliance with the strict requirements set out as part of the EN 71-3 and DIN 53160 standards.

As a result, surfaces are not hazardous to your health.

Surfaces consist of the following components, depending on their intended purpose:

  • Binder for shine, hardness, etc.
  • Pigments for colouration
  • Solvents used in processing
  • Auxiliary substances for development and curing


In their publication on purchasing furniture (German title "Möbelkauf"), "Stiftung Warentest" describes the properties of our furniture painting systems as follows:


Natural resin paint

Dries slowly. Soft, elastic surface. Breathable.


UV water paint

Dries very quickly. thick, resistant layer of paint.



Emphasises the very natural wood effect, easy to repair, low resistance.