Customer benefits in our cooperation

W. Giertsen Tunnel (WGT) offers solutions in water and frost protection of rock caverns and tunnels. We have completed over 3,000 projects in Norway and 22 other countries in the last 30 years. WGT's solutions are used in wastewater treatment plants, hydropower plants, military plants, parking facilities, archives and other mountain halls and tunnels.

Technology and solutions

Our solutions have proven its quality for over 30 years.

With international experience, we have now carried out over 3000 deliveries in more than 30 countries. WGT delivers high quality products - manufactured in Norway.


WGT has safety-cleared assembly and service personnel.

Without chemicals, exhaust gases, noise & particulate matter during installation, our solutions contribute to a far better environment, both during installation and in the operational phase.

WG Tunnel sealing is the sealing solution with lowest environmental footprint in the market.

Life Cycle Cost

Solutions from WGT have a long life cycle, as well as low maintenance and operating costs. Our products allow for good control of humidity and temperature.

Our product provides good operating conditions and optimum service life for technical equipment

Experience and expertise

WG Tunnel is part of a W. Giertsen Group with over 140 years of technical textile experience.

We are an experienced team with our own employees and highly qualified installers. High knowledge of the company within tunnel and rock space - from projects and deliveries nationally and internationally

Flexibility and tailoring

Our solutions provide greater flexibility & value in use of the storage room.

We can customize the solution to provide the best result for the customer. We are a dynamic and solution-oriented organization that delivers top quality - from the small to the largest projects

Our way of working

WGT always focuses on the customer and the customer's values.

With a good, clear and transparent collaboration we have our own experienced installers who ensure a good delivery for our customers.

Good communication during the delivery - and not least - in the follow-up after.

Our collaboration process with the customer


Customer's challenge - concept and project description


Our solution suggestion




Preparation / delivery / hand-over


Follow-up / service

W. Giertsen Tunnel specialize in waterproofing of tunnels and rock caverns


Nygårdsviken 1
5165 Laksevåg
Bergen, NO
Copyright © 2022 W. GIERTSEN AS