Drainage pipe lining

Delivered by our specialist Group company Jet Aire, cured-in-place-pipe (CIPP) lining is used when there are too many issues with the drain system for localised patches to be effective. It could also be more efficient (either through cost or time) to use a liner.

Drainage pipe lining can be installed and cured using either an ambient, hot, or ultraviolet (UV) method.

Ambient curing

A resin-impregnated liner is cut to length and installed using a compressor and an inversion drum. This method is quick and is ideal for managing existing flows and can be done from one access point.

Hot curing

A resin-impregnated liner is inserted into the pipe and pulled through to the next manhole.

The liner is filled with water, which is heated to around 85 degrees. The water is circulated for 4 hours until the liner is cured in place, then the water is allowed to cool. The liner is cut to release the water so that the liner can be trimmed, and any lateral connections cut.

Ultraviolet curing

The liner – which has been impregnated with light-sensitive resin – is pulled through the drainage pipes and inflated with air.

A UV light train is then pulled through the run. Once the light has come into contact with the drainage pipe lining, it begins to cure. This is a faster option, although it is restricted to straight runs.

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