1. Over a period of time the pipework can deteriorate through being poorly laid, age, weakening weight stress and chemical erosion.
2. The pipework can become porous, allowing water to leak out. Subsoil is then washed away from around the pipe causing subsidence.
3. If the pipework leaks it may attract tree or shrub roots causing further damage.
4. Pitch fibre pipework is prone to deterioration from within by blistering, causing obstructions and eventually closing up the pipe.
5. The usual forms of pipe maintenance carried out on pitch fibre pipework may actually cause further damage due to its delicate nature. |