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Pitch Fibre By our high standards, pitch fibre is a very poor drainage material. Research suggests it has a limited lifespan of about 40 years at best, but nobody knows how long as each run is different. If you have pitch fibre drains that are still in good condition it would be beneficial, in terms of cost, to have have these re-lined to prevent delamination and deformation. Our experience has shown the following problems can occur with pitch fibre pipe used for foul drainage: Over a period of time the pipework can deteriorate through being poorly laid, age, weakening weight stress and chemical erosion. The pipework can become porous, allowing water to leak out. Subsoil is then washed away from around the pipe causing subsidence. If the pipework leaks it may attract tree or shrub roots causing further damage. Pitch fibre pipework is prone to deterioration from within by blistering, causing obstructions and eventually closing up the pipe. The usual forms of pipe maintenance, eg high pressure jetting, carried out on pitch fibre pipework may actually cause further damage due to its delicate nature.

Pitch Fibre

By our high standards, pitch fibre is a very poor drainage material. Research suggests it has a limited lifespan of about 40 years at best, but nobody knows how long as each run is different. If you have pitch fibre drains that are still in good condition it would be beneficial, in terms of cost, to have have these re-lined to prevent delamination and deformation.

Our experience has shown the following problems can occur with pitch fibre pipe used for foul drainage:

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


PITCH FIBRE RE-FORMING This system works through winching with a specially developed ‘re-former’ designed to force the pitch fibre pipe circular and to remove any blistering. This is carried out three times and then the pipe is flushed out with clean water to remove any debris. Finally, the Plumbing & Drainage Direct Ltd engineers install a cured-in-place pipe (CIPP), impregnated with either a polyester or epoxy resin system. The major benefits are that the work be can carried out without the need to remove existing manholes and also the pipeline can be restored to its original shape without the disruption of a costly excavation.

PITCH FIBRE RE-FORMING

This system works through winching with a specially developed ‘re-former’ designed to force the pitch fibre pipe circular and to remove any blistering. This is carried out three times and then the pipe is flushed out with clean water to remove any debris. Finally, the Plumbing & Drainage Direct Ltd engineers install a cured-in-place pipe (CIPP), impregnated with either a polyester or epoxy resin system. The major benefits are that the work be can carried out without the need to remove existing manholes and also the pipeline can be restored to its original shape without the disruption of a costly excavation.