Surface seals for dams

Construction Work for Generations.

Services Surface seals for dams

Construction Work for Generations.

WALO has played a pioneering role in the field of bituminous asphalt seals for over 75 years with its various services in Switzerland and worldwide. Apart from sealing reservoirs, canals and landfills, dams are also part of our specialist department’s range of services.

Dams can be made impermeable to water by both a sealing layer on the inside of the dam wall (core wall) as well as an external sealing layer on the dam embankment. In the latter case, the asphalt liner is applied to the embankment facing the water of the finished dam in strips between 2.5 and 6 metres wide. Embankments up to 200 metres long and with a maximum slope of up to 1:1.5 are possible here The high resistance of the asphalt to mechanical influences (e.g. ice drift) means that no additional measures are needed to protect the sealing layer. The asphalt liner is environmentally friendly and non-toxic, making it also ideal for dams containing drinking water.

Leistung: Surface seals for dams


Giessenstrasse 5
Postfach, 8953 Dietikon 1

+41 44 745 23 11

433 Broadway, Suite 604
10013 New York NY
United States

+1 (212) 691-4537

Communication House, University Court,
Staffordshire Technology Park
ST18 0ES Stafford

+44 (0) 1785 719793

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Walo Bertschinger AG

Heimstrasse 1

8953 Dietikon

Tel. +41 44 444 31 11


Concept / Design / Implementation

Die Gestalter AG, St.Gallen

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Tel: +41 (0)848 000 118


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