UKDN offers several 'no dig' solutions to restore structural integrity to defective pipes and sewers. By repairing pipes in this way, UKDN can complete works at a much lower cost and with considerably less inconvenience to the property owner. By avoiding excavation, UKDN can complete works in a fraction of the time and avoid disturbing the ground surface and the inevitable need to reinstate to its original condition.

Where a pitch fibre pipe has collapsed, UKDN technicians are often able to re-round it using a winch driven mandrel pulled through it.

UKDN use an exclusive 'cured in place' polyester pipe liner which is inserted and, using water pressure or air, applied to the inside of the old pipe.

Liner Technical Properties

Where the level of damage is more localised, similar techniques can be used to apply a UKDN exclusive patch system which uses a silicate resin and glassmatting material to repair isolated areas of damage. The patch can normally be applied and cured in less than 3 hours without interrupting drain flow. The bonded system is water tight and provides an economic, durable, structurally sound and long lasting solution to drainage problems.

Following repair, the pipework is again inspected by CCTV to verify that the work has been undertaken successfully.