Tonbridge – Root Removal and Localised Structure Repair

The Project

Root Ingress Identified Within a Primary School Drainage System.

KD Drainage attended a primary school in Tonbridge to investigate drainage problems using specialist CCTV survey equipment.

The survey revealed substantial tree root ingress within the underground drainage system, together with defective joints that were providing an entry point into the pipework.

The roots needed to be removed before the underlying defects could be repaired and the drainage system protected against further ingress.

Our engineers therefore combined CCTV investigation, specialist high-pressure root cutting and a localised structural repair to address both the blockage and its cause.

The Challenge

Tree Roots Had Entered Through Defective Drainage Joints.

Tree roots naturally seek moisture and can exploit very small defects in underground drainage pipework.

Once inside, they continue growing and can restrict flow, catch debris and place further pressure on already weakened joints.

In this case, the CCTV survey confirmed that root ingress was extensive enough to require mechanical removal rather than conventional blockage clearance alone.

Simply cutting the roots would not provide a long-term solution unless the defective joints that allowed them to enter were also repaired.

Our Solution

Specialist Root Cutting Followed by Localised Structural Repair.

Our engineers used specialist high-pressure water jetting and root-cutting equipment to remove the root mass from inside the drainage pipework.

The work was monitored using CCTV so the team could track progress and assess the condition of the pipe once the obstruction had been cleared.

With access restored, the defective joint could be repaired using localised structure repair, also known as drain patching.

This targeted trenchless repair strengthened the affected section and sealed the defect that had allowed the tree roots to enter.

Why CCTV Matters

Finding the Root Cause Before Choosing the Repair.

Tree root ingress often begins through a structural weakness such as a cracked pipe, displaced joint or defective connection.

A CCTV drain survey allows the drainage engineer to see both the obstruction and the condition of the surrounding pipework before deciding how to proceed.

Once the roots have been removed, another inspection can confirm whether a targeted repair is suitable or whether more extensive remediation is required.

That is particularly important with recurring root problems, where simply clearing the blockage without repairing the entry point may allow the roots to return.

Root Ingress in Drains

Why Tree Roots Can Become a Recurring Drainage Problem.

Tree roots are naturally attracted to moisture and can exploit cracks, weak joints and other defects within underground drainage systems.

Once roots enter the pipe, they can continue to grow and trap paper, waste and debris, eventually creating a substantial blockage.

Specialist root removal restores the immediate flow, but repairing the structural defect is often what prevents the problem from repeatedly returning.

Depending on the condition of the drain, suitable options can include localised patch repair, drain relining or conventional pipe replacement.

Recurring Root Problems?

Need Tree Roots Removed From Your Drains?

KD Drainage provides CCTV investigation, specialist root removal and structural drainage repair across Kent, London and the wider South East.

If the same drain keeps blocking or tree roots have already been identified, speak to our team about removing the obstruction and addressing the defect that is allowing roots into the pipework.