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Case Study: Leaking Water Main, UK

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A live repair carried out on a water main which had been leaking for the previous 15 years


Fixing the unfixable – finding a solution for a water main repair which had been leaking for 15 years


For 15 years, nobody had been able to find a solution to fix a leaking water main located underground in the United Kingdom. That was until a SylWrap Universal Pipe Repair Kit carried out a permanent water main repair inside of an hour.


Why had it taken such a long time to find a suitable repair method? There were two major challenges which needed to be overcome for this water main repair to be successful, which explains why it had remained in a damaged state for a decade-and-a-half.


The first challenge was that the 40mm carbon steel water main was located in a confined space underground. Access was extremely restricted, meaning that a repair was difficult to carry out. Only a single contractor could realistically access the water main at any one time and there was no room for any heavy equipment. This also made a water main replacement even more difficult.


The second challenge was that because of the importance of the water main involved, shutting off the flow was impractical. The only solution therefore was to find a way to carry out a live leak repair in a restricted space which would be effective when pressure could not be turned off – something which had proven elusive until now.


Sylmasta recommended the use Wrap & Seal Pipe Burst Tape and SylWrap Pipe Repair Bandages for a repair, both of which can be found in the SylWrap Universal Pipe Repair Kit for sealing live leaks.


Because of the complexity of the repair, it was decided to use a double wrapping of Pipe Burst Tape in order to attempt to seal the leak. In normal applications, Wrap & Seal would be stretched by 300% and wrapped firmly around the leaking water main.


But given how little room there was to work under the pipe, there were concerns that maximum stretch of the Pipe Repair Tape wouldn’t have been possible during this particular application.


Once the water main repair began however, it soon became clear that Wrap & Seal was effective in sealing the leak. Once applied, the Pipe Bust Tape was then overwrapped with SylWrap Pipe Repair Bandage which, after being activated with water, set hard within 30 minutes to form a rock-hard, impact resistant layer and complete a permanent repair.


The contractor carrying out the repair was delighted that after such a long period of time, they’d finally been able to offer a solution. They said afterwards, “The repair was a complete success as we knew it would be. The information that you provided greatly supported the project and more importantly, future projects.”


It had only taken 15 years, but finally the leaking water main had been repaired.


Products used


Both of these products are available in the SylWrap Universal Pipe Repair Kit and the SylWrap Pipe Repair Contractor Case which contains enough equipment to carry out multiple fixes.



Repair Photos


If you have an application you would like to enquire about, then please get in touch

Call: +44 (0)1444 831 459
Email: contact@sylmasta.com

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