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Drain and sewer repair and excavation

Remediate drainage networks with a range of innovative technologies or excavation.

We provide domestic and commercial customers with a range of remediation and repair services to help them maintain and improve their drainage systems.

Our cured-in-place pipe (CIPP) liners smooth over damage and joints in pipes, drains or sewers, preventing leaks, floods and environmental damage without the disruption, expense or emissions associated with excavation.

Where excavation is required, our engineering team is highly experienced and can remove and repair or replace damaged drainage infrastructure safely and efficiently, with minimal impact to the surrounding area.

Features and outputs

  • Improve your drainage capacity
  • Extend your drains lifespan
  • Avoid operational downtime
  • Keep your drains flowing

What makes us different?


65 years of providing innovative drainage solutions and more than 500,000km of lines remediated.


Members of UK Society of Trenchless Technology, Constructonline, and British Safety Council.


Accredited by NRSWA, SMAS, CHAS and Achilles UVDB and Carbon Reduce.


360 in-house engineers and specialists.

Range of applications

We can line drains and sewers from as little as 70mm all the way up to 1,500mm.

Patching and lining

CIPP lining

Cured-in-place pipe (CIPP) lining creates a new, smooth pipe inside the existing pipe when the issues with the drain run are too extensive to install patches.

There is no digging involved as the relevant section can be accessed from manholes. There are several different types of liner, each suitable for different situations.


Patch repairs are used when there is localised damage such as cracks or root ingress.

Primus Line

Primus Line is designed for use in highly pressurised pipelines carrying water, oil, or gas.

Lateral sealing

Our lateral sealing system seals around defective connections at any angle to prevent infiltration and leaks.

Cured-in-place repair (CIPR)

CIPR provides localised spot repair for minor defects. It is a fast, economical, and robust solution to remediate pipes with specific defects, leaving a smooth impermeable finish. The resin is minimal shrinkage making it the ideal solution for preventing water leakage.


Our excavations team can carry out a range of drain installations and repairs including:

  • Rerouting pipes around building work, to give customers better access for ongoing maintenance.
  • Installation of pumping stations and pressurised mains.
  • Repairing highways drainage such as road gullies, manholes or collapsed sections of drain.
  • Replacing gully grates, manhole covers and other ironwork.

Excavations may be done by hand or mechanically, depending on the location, environment, and other factors. All excavations are carefully planned to avoid any damage to utility lines, with thorough risk assessments in place. 

As well as excavations, we can also carry out full installation of new systems including foul and surface water, clean water supply, sewer connections, manhole construction/repairs, ACO drains, ironwork, pumping stations, interceptors, and sewage treatment plant/septic tank facilities.

No-dig installations

The use of pneumatic moling and directional drilling techniques allow for the installation of pipes or ducting where excavation is not possible or would cause significant disruption.

Pipe bursting

Pipe bursting is a trenchless method of replacing buried pipelines without the need for a traditional construction trench. It involves breaking and expanding the existing buried sewer line while simultaneously replacing it with new high-density polyethylene (HDPE) pipes.

Septic tanks

We install and replace septic tanks and treatment plants, proposing new systems to remedy past issues.

Keep your business compliant and protect the environment while reducing the risk of operational downtime

Find out how Adler and Allan reduce your risk and support you on your journey to Net-Zero through the management and maintenance of assets.

Contact our experts