Membrane-based constructions and water storage systems

Impression

Anders Invest holds a 49% stake in Genap, based in ’s-Heerenberg. Genap designs and delivers custom membrane-based constructions and water storage systems for greenhouse horticulture, agriculture, and civil engineering. The company generates annual revenue of approximately €25 million and employs more than 100 people.

Genap has been a leading player in the world of water and liquid storage for decades. From its headquarters and production facility in ’s-Heerenberg and its second production site in Steenwijk, the company develops high-quality membrane-based constructions that are used worldwide. These range from water silos and basins for greenhouse horticulture to lining systems for large-scale infrastructure projects and manure storage systems in the agricultural sector.

Genap’s strength lies in the combination of in-house material processing, craftsmanship, and deep technical expertise. Plastics such as HDPE and LLDPE are processed in-house and extensively tested in the laboratory, where R&D and certified welding processes ensure consistent, verifiable quality. Within the civil engineering sector, Genap works on major infrastructure projects, from roads and tunnels to landfill lining. The company installs vast areas of watertight geomembranes, sometimes exceeding 100,000 m² per project. Genap particularly stands out for an expertise mastered by only a few parties: professionally installing these watertight layers under wet conditions.

Genap supplies and installs its systems worldwide, supported by a network of its own offices and partners. For the international greenhouse horticulture market, the company has local production and installation capabilities in, among others, Canada and Mexico. This keeps lead times short and enables projects in those regions to be managed directly and efficiently. In the agricultural sector, Genap has been delivering reliable manure storage systems for decades. These solutions align with increasingly stringent regulations and play an important role in preventing odor and CO2 emissions.