LLANGOLLEN CANAL – ENGLAND

A 400 meter section of the Llangollen canal waterproofing system needed renovation due to leaks in the nearly 200-year-old structure. The constraint was to use a product that met the technical and environmental requirements. It was important that the canal did not become a sterile environment. The engineers therefore chose the Coletanche bituminous geomembrane. Another benefit is that it can be installed by local labour and does not require a specialist subcontractor, unlike other systems.

After removing silt (over 90 years of sedimentation!), a drainage layer was laid between two geotextiles and covered with a compacted top layer and COLETANCHE NTP 2.