SITREN® is our brand name for various powder and liquid additives including defoaming, air entrainment, shrinkage reduction, water repellency and mould release.


Protection of new and renovated concrete surfaces is key to ensure protection against environmental influences.

The right additives can make the difference within concrete structures or additional protective layers. They can have a major influence on the durability and the workability.


Additives for integral protection of concrete structures.

Technical Advantages

Our broad range of performance additives like water repellents, shrinkage reducer, air entrainer or defoamer have a direct impact on the durability of concrete structures. In addition to these performance additives we offer products like TEGO® Antifoam or TEGO® Addibit to improve the properties of other protection products like coatings.

Additives for buidling materials

With our advanced construction additives we offer solutions that enhance our customers‘ performance and value. Long-term relationships based on trust and face-to-face consulting is the basis of our work.


Liquid and powder performance additives for concrete and drymix applications.

Technical Advantages

Our SITREN® and SITREN AirVoid® product ranges contain different types of performance additives, mainly for cement-based applications. In addition to a broad range of liquid, powder defoaming and air entraining additives, for an optimized air control of concrete or drymix mortars, we offer different powder solutions for shrinkage reduction, water repellency and mold release.