Denys NV is a multidisciplinary construction and infrastructure group that has been active for decades in the fields of water, energy, mobility, civil engineering, renovation, and specialized techniques. Thanks to this broad expertise, Denys delivers complex projects in Belgium, across Europe, and beyond, and acts as a trusted partner whenever technical challenges are substantial. One example is the expansion and renovation of its own office in Wondelgem, a project that symbolizes its in-house “design-to-construction” model.
At the same time, tunnelling is one of Denys’s core specializations. With extensive expertise in micro- and mid-size tunnelling, Denys bores tunnels beneath rivers or urban areas, which is essential for infrastructure works in challenging soil conditions.
In the field of energy infrastructure, Denys carries out ambitious pipeline projects. Recently, on behalf of Fluxys, Denys worked on the installation of a new underground hydrogen pipeline, including a section beneath the River Scheldt — a technical tour de force that contributes to sustainable energy supply in Belgium. In addition, Denys constructs industrial pipelines, water pipelines, and complete water infrastructure systems, ranging from pumping stations and water towers to distribution networks, not only for drinking water but also for industrial applications.
Denys is also active in rail and infrastructure projects, including roads, civil works, railway lines, tunnels, bridges, and stations. Furthermore, renovation and restoration of existing buildings or monuments form part of its services. Using specialized techniques such as injections, foundation reinforcement, and concrete repair, Denys restores old or damaged structures to optimal condition.
Thanks to the diversity of its disciplines — from waterworks to tunnelling, from pipelines to renovations — Denys is often the ideal partner when multiple areas of expertise come together within a single project. This makes the company flexible, technically strong, and capable of delivering tailor-made solutions. Its international ambition and experience, combined with technical know-how and innovative thinking, make Denys NV ready for the challenges of today and tomorrow.