Firmly rooted in Dutch soil—connected to the world
With offices in Gouda and Middelbeers, Silt Geo is deeply anchored in both the Zeeland clay and the sandy soils of Brabant—bringing together the best of both worlds. The result? An unparalleled depth of knowledge about the ground beneath our feet. Not just in the Netherlands, but far beyond. And that knowledge is pure gold.
Silt Geo was born from the merger of the geotechnical divisions of three renowned companies: Lankelma Geotechniek Zuid, Ockhuizen Geo- en Milieutechniek, and Wiha Grondmechanica—each with a strong legacy in soil expertise.
A Legacy of Expertise, United in Silt Geo
WIHA Grondmechanica
Since 1979, WIHA Grondmechanica has grown into a modern, well-equipped company specializing in a wide range of geotechnical investigations. With a flexible approach and equipment for every situation, WIHA is known for its customer-focused mindset and practical problem-solving. Backed by a strong network and decades of in-house expertise, WIHA always delivers the right solution.
Lankelma Geotechniek Zuid
What began in a small upstairs office in Oirschot quickly evolved into a thriving geotechnical firm. By 2003, the team had grown to twelve, and the company continued to expand—eventually moving into a spacious, modern facility in 2021. Today, Lankelma Geotechniek Zuid is a dynamic and healthy business, known for its hands-on approach and technical excellence.
Ockhuizen Geo- en Milieutechniek
With over 75 years of experience, Ockhuizen is a trusted name in the geotechnical and environmental sector. Known for delivering high-quality advice at highly competitive rates, Ockhuizen has built a reputation for reliability, consistency, and deep technical knowledge.