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Who we are

Anchored in Switzerland and internationally active, WALO is managed as a family business in the 4th and 5th generation. For over 100 years, WALO has focused on the combination of consistency and innovation.

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What we do

WALO is active as an innovative total solutions company in all markets of the construction industry. The family-owned company has established itself as a reliable partner in the construction industry and infrastructure projects in Switzerland and worldwide with its decades of experience and the permanent development of sustainable as well as economical solutions.

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Projects

We have successfully implemented many challenging projects. Therefore, we proudly let our references speak for our work.

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Products

Whether residential, industrial, healthcare, outdoor or for sports and leisure facilities - seamless floor coverings have to meet a wide variety of requirements on a permanent basis.

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Career

Good buildings and thus satisfied customers require precise construction work. All our employees, from unskilled workers to engineers, play a key role in ensuring that we achieve this goal time and time again.

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Locations

With our locations in three countries, we are successfully active for you worldwide.

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Zarnowiec Power Plant, Poland

WALO successfully rehabilitated the surface of the largest pump storage scheme in Poland, ensuring electric supply in peak times and stabilization of voltage. A complex composite lining system was created by their Zurich laboratory to resist harsh conditions.

Case Study Description

"The powerplant of Zarnowiec is the largest pump storage scheme in Poland and is responsible for ensuring the electric supply in peak times and the stabilization of the voltage in the polish electrical power system. The permanent load changes during operation and the extreme differences in temperature have imposed a severe stress to the reservoir lining.

WALO was commissioned to completely rehabilitate the surface of the lining on the steep sided slopes which have an inclination ranging from 1:2.75 up to 1:2. After removing the surface of the upper sealing layer and reﬁtting the damaged zones, WALO fitted a new Dense Asphaltic Layer (DAC) followed with an application of new mastic coating. A mixing plant was installed close to the site for the production of the bituminous mixes. WALO managed all the logistics associated with the mixing plant.

WALO constructed the cells as part of a composite lining system of some 17,800m2 using DAC formulated in the company’s Zurich laboratory to a design mix unique to the project. The lining system comprised a 300mm mineral attenuation layer; 200mm sub-base material layer; 60mm asphaltic binder layer, 80mm dense asphaltic concrete layer and a mastic seal coat to the base, side slopes and bund areas. The works involved the placing of asphalt by paver and winch on a 40m slope. Once the lining was completed, a 300mm thick layer of leachate drainage stone was applied to the whole area."