You can describe expertise in many words.

Or simply think of Wannenwetsch.

We have something against building delays:

The right technology, for instance.

Those who have expertise, can offer expertise.

We represent everything that expertise represents.

Why can we work so efficiently?

Because water simply goes deeper at high pressure.

Substrate preparation, concrete cutting, roughening, exposing reinforcement...

Always Wannenwetsch.


Reach for expertise – with the internationally renowned Wannenwetsch GmbH!

Wannenwetsch is a global specialist in the building renovation sector. Our core competence is high-pressure water blasting.

We offer you efficient solutions with manual cutting equipment and high-performance cutting robots. And the advantage for you is that we can design and construct custom-made cutting equipment for special projects in our in-house development division.

To learn more about the high-pressure water blasting and our equipment technology, browse our references or simply contact us.

Selection of projects that Wannenwetsch has successfully completed.

Deployment of a telescopic robot with curved beam, designed for tunnelling:

Repair of fire damage in the Euro-Tunnel

The curved shape of the tunnel tube usually only allows slim cutting beams. To achieve efficient cutting, Wannenwetsch developed a curved beam that offered considerable time savings compared with the conventional method, thanks to its 3 m width.

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Formwork and blasting concept for challenging dimensions:

Concrete renovation & strengthening of waste bunker / Ruhleben waste-to-energy plant

The geometry and intended purpose of the 130 m-long and more than 30 m-high structure placed special demands on the equipment technology. The cutting was performed using a special formwork concept.

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Working under the highest quality criteria

Renovation of the P6 multi-storey car park – Zurich Airport

With more than 26 million passengers every year, Zurich is the number 1 airport in Switzerland. The airport is also an international player in terms of quality. Therefore, the chloride-damaged surfaces of the P6 multi-storey car park were overhauled to the highest standards, including the consistent use of certified particulate filters.

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Development and use of project-specific custom solutions

Total demolition of diaphragm wall - City-Tunnel Leipzig

A custom design was developed to demolish the solid reinforced diaphragm wall at the “Markt” station. The double nozzle on a movable carrier frame was supplied with 530 litres per minute by two 550 kW-impelled units.

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Work on a European transport hub

Renovation of Felperbrücke - A13 Brenner motorway

The renovation works on the high-traffic Felperbrücke on the Brenner motorway were completed in three construction phases – with two-way traffic throughout – and posed great challenges to man and machine due to the tight interim and final deadlines.

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Work on steep embankments:

Renovation of the Inn Canal – Jettenbach / Töging

For the renovation, 570,000 m² of embankments with a consistent gradient of 40° was prepared within 6 weeks for the subsequent works. An in-house developed, multi-nozzle blasting jet blasted the embankments in combination with high-performance telescopic caterpillars

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Work on the North Sea bed

Renovation of the Limfjord Tunnel, Denmark

The Limfjord tunnel is a key link to the Aalborg region. Water penetrated the twin-tube undersea motorway tunnel due to leaky construction joints. The purpose of the renovation was to stop the water penetration and to reconstruct the damaged concrete.

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Renovation of the water-side dam wall

Maintenance of Pöhl Reservoir / Saxony

The structure required restoration due to the severely damaged concrete surface of the water-side dam wall. The remedial works for the dam wall were scheduled in two stages. Firstly, large areas of damage, weathered old concrete were removed by high-pressure water blasting. Secondly, a 20 cm-thick shotcrete facing formwork was constructed.

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Learn more now!

Would you like advice or information, or do you have a query for Wannenwetsch? We look forward to hearing from you.

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Reach us directly on +49 (0)3693 94 03-0.