About Us

We hold accreditation from DAkkS for a wide range of building product inspections in the drainage sector, as well as for our work as an inspection body. In addition, we are recognized by the German Institute for Structural Engineering (DIBt). As one of only ten companies nationwide, we are approved as a third-party reviewer for plastic landfill sealing by the Federal Institute for Materials Research and Testing (BAM).

We are consulted as experts due to our neutral and independent work. We ensure clarity for manufacturer and users with analyses of material composition and the mechanical characteristics – as a public sworn-in expert partly with legal proceedings.

 

Our Team consists of approximately 30 active engineers, technicians, inspectors, and specialists who support and care for our clients and customers. Diversity is a part of our daily life and we take pride in the fact that some of our employees have been with us for decades.

Our laboratory und headquater are located in Oststeinbek, on the eastern outskirts of Hamburg. Our teams are also available to support you at our other locations in Hamm (North Rhine-Westphalia) and Haar, near Munich.

We present our experiences in numerous proved projects and ensure trust for the use of plastics in the building industry. We introduce our competence for quality assurance through the important committees that create sets of rules and quality norms – national and international.

We award good work: With the seal “End product pipe liner – tested quality” we annually award companies that have shown good work as an executing company in pipe lining for over a year.

History

Team member
Kay Siebert
Managing Director
Management
Team member
Andreas Haacker
Managing Director, Dipl.-Ing.
Management
Rolf Siebert
Rolf Siebert († 2010)

Siebert + Knipschild was founded in 1983 by graduate engineer Rolf Siebert († 2010).

Rolf Siebert was one of the pioneers in the field of on-site plastics testing: In the early days of the CIPP industry, he established standards that continue to serve as the foundation for current guidelines and regulations. He passed on his expertise to the next generation.

Today, Siebert + Knipschild GmbH has approximately 30 employees. The company is led by Kay Siebert and Andreas Haacker.

The Team

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