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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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Châtillon Landfill, Switzerland

The Châtillon Landﬁll site is situated in a former gravel pit. The landﬁll stores mixed waste and slag/ash from the local incinerator plant. The sealing system of clay needed replacing with a bituminous lining system so WALO was commissioned to undertake the works.

Case Study Description

As it is impermeable to leachate and methane, WALO’s Dense Asphaltic Concrete (DAC) was an ideal choice for complete containment of the landﬁll waste brought to Châtillon. WALO constructed cells at the site using DAC formulated in the company’s Zurich laboratory to a design mix unique to the project.

In addition to replacing the lining, the client was looking to benefit financially by increasing the void size available at the site. As WALO specializes in applying DAC to steep slopes using highly advanced laying and compaction techniques, it was possible to construct very steep slopes at Châtillon, thus increasing the void available. As well as being very strong and ﬂexible, WALO’s DAC can be applied in thin layers (here just 70mm), further increasing the size of the void available. Numerous cells at Châtillon have been constructed by WALO in the last two decades. Working at the site, WALO discovered that there is a significant advantage in being able to join each successive cell together, forming one homogeneous, perfectly sealed landﬁll. The separation of the different compartments within the landfill is done by intercell bunds made of DAC, that the locals call ‘Toblerone’ – owing to their shape!