01 Quick Answer

06 Common Drainage Defects That Allow Rat Access

Rats don't usually enter a property because they're determined—they enter because the drainage system provides an opportunity.

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Even relatively small defects can create access points, allowing rodents to leave the sewer network and enter private drainage systems.

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Some of the most common drainage defects that allow rat access include:

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Open or Defective Joints

Over time, pipe joints can separate or deteriorate, creating small gaps that allow rats to enter the drainage system. These openings can also permit root penetration and wastewater leakage.

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Fractures and Cracks

Cracked or fractured pipework weakens the drainage system and can create access points for rodents, particularly where the damage has worsened over time.

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Pipe Collapse

A collapsed drain can create voids around the pipe, making it easier for rats to burrow into the surrounding ground and gain access to the drainage network.

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Redundant Drains

Unused or abandoned drainage connections that haven't been properly capped are one of the most common routes for rats to enter private drainage systems.

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Damaged Inspection Chambers

Broken benching, missing channel sections, defective brickwork or poorly fitting inspection chamber covers can all provide opportunities for rodents to leave the drainage system.

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Incorrect Repairs or Poor Workmanship

Temporary repairs, poorly sealed connections or inappropriate alterations to the drainage system can unintentionally create entry points for rodents.

Identifying the Entry Point

Because many of these defects are hidden underground, they're rarely visible from the surface. A CCTV Camera Condition Inspection allows us to inspect the drainage system, identify potential entry points and recommend the most effective long-term solution—whether that's repairing the defect, capping a redundant drain or installing a rat blocker.