If there are pipes or outlets that penetrate through the lagoon liner, it is essential that it is sealed correctly.
For rubber liners, the simplest method is to cut a hole in the liner, usually 50% of the diameter of the pipe and then stretch the liner over the pipe. The lagoon liner can then be clamped in place and sealed using specialist tapes such as Firestone QuickSeam FormFlash. This method is shown in the diagram below, and is the most common method of integrating pipes into a liner.
In some instances, a pipe may be integrated into the liner using a flange fitting. This method is most commonly used when the lagoon includes a flat wall. It uses a mechanical flange to clamp the liner between the two parts of the flange. A specialist water block sealant provides added protection against leaks.