Be part of our future

In 1993, Johannes and Gabriele Stark founded duotherm Stark Isoliersysteme GmbH & Co KG. Today they run the company together with their children.

The steady growth of our family business is based on the continuous improvement of our service and production facilities, including forward-looking manufacturing tech-nologies to benefit our customers. In 2019 we have completed the extension of our facility with additional production and storage space and office building.

Together with approx. 50 dedicated employees, working in two shifts, we dispose of 6800m².

Second location in Ruhrgebiet starting 2020

duotherm Stark continues the work of Westro Feuerungsbau with assembly and services. Use our know-how for your next project!

Westro Feuerungsbau

Heating systems - 2 times 30 years of experience

The firm of duotherm Stark established a further performance area in 2015 with the manufacture of heating elements and heating systems.

In addition to Johannes Stark’s decades of experience in manufacturing insulating systems, the company has gained additional professional experience in 2015.

Roland Winter, who has been developing heating elements and heating system for more than 35 years, is working for duotherm Stark as a self-employed consultant.

Your partner for customised insulating systems

duotherm Stark Isoliersysteme GmbH & Co KG