The Dachverband Lehm e.V. makes and promotes important professional contacts. These include cooperation with international organisations, networks and associations. Close contacts exist already with IG Lehm in Switzerland, the Scandinavian earth building organisation NOL and the international Building Advisory Service und Information Network (BASIN). Our work in Germany has proved that a strong national association meets with better acceptance with organisations, public authorities and sponsors. We continue to extend and consolidate our many individual contacts at international level and to structure them in a global information network.