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Tunnel fabric
W. Giertsen Tunnel supplies customized drip shield solution for climate stabilization and drip protection in rock chambers and underground structures.
The tunnel membrane consists of a reinforced polyester core with a PVC coating, ensuring a minimum service life of 50 years. The system offers high flexibility in design and can be installed before, during, or after the construction of other structures.
Installation is carried out with adjustable spacing to the rock surface using W. Giertsen Tunnel’s proprietary bolt and wire system. This allows for inspection of the areas behind the membrane even after installation.
The tunnel fabric has fire class B-S2-d0 and is self-extinguishing.
Inspection and maintenance
W. Giertsen Tunnel provides inspection and condition assessment of existing drip shield solutions in rock chambers and underground facilities.
The condition assessment offers owners and operators a structured and detailed overview of the system’s technical state. This supports risk reduction and serves as a foundation for developing a long-term maintenance plan, helping to extend the system’s service life. If required, recommendations for system upgrades or extensions can be incorporated into the assessment.