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Water Utility Company

Project objective

To create a water tight internal structure which prevents ingress of untreated water contaminating the treated water.

Project description

As this service reservoir tank was having problems with bacterial failure, we needed to apply reg 31 approved 2mm Flagon GeoP/AT to the walls and floor of this underground concrete storage tank, this was done by using hot air and wedge welding process. the 2mm thick membrane used for the floor also provides a hard wearing and anti slip surface. The columns were all fitted on site using 1.5mm Flagon GeoP/AT. The bespoke nature of fitting these columns meant that a lot of complex individual shaping was involved.

In addition to this refurbishment, we also lined a number of baffle corridors and balancing openings with block work also required lining. An underfloor drain was also installed beneath this lining system to allow for dewatering during this project and for future cleaning periods.


4 weeks

Required turnaround


Lanes of corridors


sq.m of complex welding was used (approx)

Deadline met. We completed this work in the 4 week turnaround required by the water utility company to finish the project including necessary testing and to return the tank to service.

7 lanes of corridors with approx 1600sq.m of complex welding was used.