Pride of place in our range is the finger-jointed Robinia. We have developed the technology of finger-jointed robinia ourselves, after years of exercising. Things that are state of the art in the softwood industry (for example solid construction timber “KVH”) cannot be transferred to the Robinia because of the completly different characteristics of the wood. Furthermore, the finger-jointing of Robinia has been designed for exterior use, so special, absolutely weather-resistant (heat, frost, UV-light) adhesives have to be applied in production. At the same time, the adhesive has to be elastic enough to permanently absorb the high tensions of the Robinia wood that are generated during the contraction and swelling stages.



The basic work for transferring the development of finger-jointing technology to Robinia was a diploma thesis of Gregor Müller. He researched the optimal geometry for the joints and the adhesive having optimal ecological and technical characteristics. The project couldn’t have been accomplished without his work and without the intensive cooperation with the manufacturer of adhesives.

Finger-jointed boards have the great advantage that they are available in lengths up to 6 m and feature a consistently defined wood quality. Due to the stability of the form and the resulting very high suitability for storage, they are also suitable for the classic timber trade. Hence Robinia can eventually find its way into the timber trade and it can be distributed to the general public.

Only in this form Robinia can come into consideration as a serious "alternative" for tropical or boreal woods that are ecologically not justifiable (and partly misleadingly "eco"-certified). The Robinia can have an important contribution to prevent the usage of tropical woods.