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At Metro Rod, we also offer patch repair and excavation as a drain repair technique.

If a drain becomes damaged you will need to decide what measures to take in order to resolve the issue. This will depend on the extent and seriousness of the damage.

Trenchless technologies such as patch repair is a popular choice for rectifying drain repairs as it’s cost-effective and causes less disruption. However, for more serious cases, it may be necessary to employ full excavation and drain replacement to rectify this issue.

Localised Structural Repairs (LSRs) – Patch Liners

Patch repairs are localised repairs that offer a cost-effective solution to fixing individual defects within a drain or sewer.

This particular drain repair consists of fibreglass matting impregnated with a Silicate resin solution. The matting is then wrapped onto a packer and inserted into the pipe and positioned at the location of the defect. The packer is then inflated to a pressure of circa 2 bars and left in place while the resin cures.

Once the curing process is complete, the packer is removed leaving a water tight permanent repair. Applications include holes, cracks, fractures, water ingress, displaced or open joints, and root ingress (after removal).

No-Dig or Trenchless Repairs

A popular drain repair service that we offer is a “no dig” repair. As the name suggests, this repair does not require excavations and instead encompasses various lining techniques. The result is a speedy, reliable fix that won’t dent your pocket.

Metro Rod has developed and perfected these techniques over the last 25 years and have a number of options for materials to give the most cost effective and efficient solution.

No-Dig Repair options vary depending on the application, but they all involve inserting a liner into a drain which is impregnated with resin. The liner is moved into position, whether it is local or full length, and then inflated to give a water tight repair by effectively making a thin strong layer inside the existing drain. When the required cure time has elapsed, the means of inflating the repair is removed to restore the full drain function and integrity.


In the event of collapsed drains that can’t be repaired or the need to facilitate access for lining repairs, excavation is sometimes the only option.

Drain excavation involves an engineer digging a hole so that they can reach a drain in need of attention. Excavation tends to be more expensive and disruptive than other drain repair methods, but as all our engineers are trained in the use of CAT and Genny, you can rest assured that they will be able to excavate your drain safely and with minimal inconvenience.

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