Sealing systems in civil engineering: installation by a certified WHG specialist
Sealing systems in civil engineering are watertight geomembrane barriers installed to protect structures and groundwater from water ingress and harmful substances.
Naue supplies and installs these systems as a TÜV Nord-certified WHG specialist company in accordance with § 62 AwSV, for three main civil-engineering applications: stormwater retention basins, hydropower canals and M TS E earthworks with environmentally relevant materials.
The sealing of structures and installations in civil engineering is crucial for protecting the environment and for the longevity of the construction. Naue offers customised sealing solutions and carries out the laying and installation as a specialist installer, using Carbofol® geomembranes with full seam testing.
At a glance
- Service: Installation of geomembrane secondary-containment sealing systems for groundwater protection
- Applications: Tank sealing · Tank farm secondary containment · Warehouse / hall floor sealing
- Materials: Carbofol® HDPE geomembrane (chemically resistant); Bentofix® GCL where specified
- Certification: TÜV Nord specialist company (§ 62 AwSV); AK GWS monitoring mark (BAM guidelines); welders certified to DVS-2212
- Regulatory basis: WHG / AwSV (incl. § 18 retention volume); BAM-approved geomembranes
- Quality assurance: 100% seam testing (applicable part of DVS 2225); weld log, QA records and as-built plan
Tank sealing (tanks, silos, basins)
What is tank sealing?
Tank sealing is the use of geomembrane barriers and welding techniques to protect containers such as tanks, silos and basins from leaks and contamination. The goal is to prevent liquids, gases or chemicals from escaping and to safeguard the surrounding soil, groundwater and infrastructure over the long term.
Why is sealing crucial?
Proper sealing protects the environment from hazardous substances and preserves the integrity of the stored materials. Even the smallest leak can cause significant environmental damage. Carbofol® HDPE geomembranes offer high chemical resistance and tear strength, providing dependable leak prevention while meeting water-protection regulations.
Tank farm sealing (secondary containment)
What is tank farm sealing?
Tank farm sealing uses geomembrane materials to ensure that no liquids escape from a group of storage tanks and contaminate the environment. A shared secondary containment (bund) retains any leaked liquid, protecting soil and groundwater from oil, chemicals and other industrial liquids.
Why is sealing crucial?
Tank farms store large volumes of water-hazardous liquids, so leaks can cause severe soil and groundwater contamination. An effective sealing system prevents pollution, maintains the structural integrity of the containment and meets legal requirements for long-term operational safety.
Warehouse/hall floor sealing
What is warehouse sealing?
Warehouse (hall) sealing is the installation of geomembrane barriers beneath or within the floor of storage and industrial buildings, so that spilled chemicals cannot reach the subgrade and groundwater. Geosynthetics form a durable, robust barrier for a wide range of floor-sealing requirements.
Why is sealing crucial?
Warehouses often store or handle chemicals; without effective floor sealing, leaks and spills can cause significant environmental damage. A reliable sealing system safely contains hazardous substances and helps ensure compliance with legal requirements.
Your Naue installation advantage – the expert in groundwater protection.
Why choose Naue as your installation expert in groundwater protection?
- Experience and expertise: extensive experience in the installation and sealing of tanks, tank farms and warehouses; active in sealing technology since the 1970s.
- Proven materials: chemically resistant Carbofol® HDPE geomembranes (and Bentofix® GCL where specified), welded on site for a long service life.
- Certified quality: TÜV Nord specialist company (§ 62 AwSV); AK GWS monitoring mark (BAM guidelines); welders certified to DVS-2212.
- Environmental performance: sealing systems help prevent water-hazardous substances from reaching soil and groundwater; Environmental Product Declarations (EPDs) are available for Carbofol® and Bentofix®.
- Comprehensive service: from planning and material selection to installation — complete service from a single source.
What are the advantages of installation by Naue?
- Environmental and health protection: a reliable secondary-containment system protects the environment and human health from harmful substances.
- Regulatory compliance: installation by a § 62 AwSV specialist company with full documentation supports WHG approval by the authorities.
- Long-term cost savings: durable, chemically resistant systems reduce maintenance and recoating costs compared with painted or coated concrete.
- Adaptability: customised solutions tailored to tanks, tank farms and warehouses.
- Documented quality: weld log, seam-test records (DVS 2225) and an as-built plan for each project.
Let’s discuss your project!
Please use the form to tell us about your enquiry
(* = required field)
Frequently asked questions
Naue installs geomembrane secondary-containment systems for tanks, tank farms and industrial warehouses. The material is usually a Carbofol® HDPE geomembrane (or a Bentofix® GCL), installed by a certified specialist company (§ 62 AwSV).
Tank sealing is the use of geomembrane barriers to protect tanks, silos and basins from leaks and contamination, preventing liquids or chemicals from escaping into the soil and groundwater.
They store water-hazardous liquids, so even small leaks can contaminate soil and groundwater. A sealing system contains any leaked liquid, protects the environment and meets legal requirements for operational safety.
A bund is a shared secondary containment across the tank farm floor and walls that retains liquid released from the tanks. Its retention volume is dimensioned in accordance with the AwSV (§ 18).
Naue mainly installs Carbofol® HDPE geomembranes, which resist mineral oils, diesel, petrol, many acids and alkalis; Bentofix® geosynthetic clay liners are used where specified. Geomembranes for these applications are BAM-approved.
Yes. Installation at facilities handling water-hazardous substances must be carried out by a certified specialist company in accordance with § 62 AwSV. Naue holds this certification and the AK GWS monitoring mark, renewed through annual audits.
A Carbofol® geomembrane (or Bentofix® GCL) is placed below or within the floor before the concrete is poured; column bases and drainage penetrations are sealed with welded boots, a protection layer is added and all seams are tested before concreting.
Yes. Naue operates internationally; applicable local standards and certification equivalences are reviewed at the project planning stage.