Drain Lining and Patching

In-situ repairs. No-Dig Technology.

"The hole and the patch should be commensurate" - Thomas Jefferson .

Some underground drain problems will require the area to be excavated to gain access to a damaged pipe needing to be replaced.

However, once we have confirmed the extent of the damage, we may be able to carry out a fast, effective, cost-efficient repair, without having to excavate or dig holes on your premises and minimise disruption.

This is No-Dig Technology.

Subject to inspection, displaced joints, fractures, cracks, tree-root damage, collapsing/deformed pipes and other faults, may be repaired by patching or lining.

This will restore the integrity of the run and prevent further deterioration. Patch/Lining can be carried out internally, or in drain runs under ground and buildings.

Side connections can be opened with cutters. Lining involves repairs to an extended drain run. Patching allows a specific spot repair 50 or 100mm long to be made in a drain run.

Our specialist trained team will use the latest methods and technology to introduce a resin soaked liner section which is then fixed in place and cured under pressure.

Called CIP (cured-in-place) lining/patching, this forms a high strength tube inside a tube.

The resultant lining reduces internal friction helping flow rate and can actually be stronger than the pipe around.

Runs can often be used again the same day.

CIP lining has become a widely used method of permanent structural repairs to drain runs from 100mm up to 900mm, whilst causing minimum site disruption.

This allows TDS Ltd. to offer a service that can be a lower cost solution to open-ground excavations.

Lead gully

Applications for CIP liners and patches.

  • Full length and spot repairs to foul and storm drainage systems.
  • Speciality/heritage drain pipes, including box section styles.
  • Repair internal and external stack pipes where accessible.
  • Capping root stems and repairing root damage after roots removed.
  • Strengthening and re-rounding pitch fibre pipes.
  • Sealing off redundant connections.
  • Improve flow in older drain lines.
  • Prevent cast iron pipes, inside or outside the building, from internal corrosion and reduce scale build up.
  • Repair damaged etc. pipes to stop ingress and egress of fluids.