This work deals with the synthesis of binder, similar to historic dolomitic romancement, from mixture of clay and dolomite instead of traditionally used marlstone, thus widening the range of raw materials. In the territory of Latvia dolomitic romancement was widely known and applied in the construction of buildings since late 19th till the middle of 20th century. Nowadays the local dolomitic marlstone is not sufficiently available. As the scientists have faced the problem adjusting compatible material for restoration of historical buildings of given time period, research is done with the aim to investigate the synthesis of romancement type binder from widespread local mineral raw materials for the restoration purposes. In given paper the chemical and physical processes in the synthesis and also obtained properties are discussed.