Manhole repair is an essential part of maintaining a healthy drainage system. Manholes allow access for inspection, maintenance and repair, but over time they can become damaged due to wear, ground movement or previous poor workmanship.
In this recent drainage repair, the internal structure of the manhole had deteriorated, particularly around the pipe entry point. The existing render had broken down, leaving the chamber exposed and no longer properly sealed.
Issues like this are more common than many people realise and can lead to further drainage problems if left unresolved, including leaks, blockages and damage to surrounding pipework.

What to Look For
Damage to a manhole is not always obvious from above ground. However, there are some common signs that may indicate a problem within your drainage system:
- Crumbling or missing render inside the chamber
- Visible cracks or gaps around pipe connections
- Water leaking or pooling where it should not
- Strong odours coming from the manhole
- Recurring drainage issues elsewhere on the property
If any of these signs are present, it is important to investigate further before the problem worsens.
The Problem
In this case, the damaged render meant the manhole was no longer properly sealed. This can allow water to escape or debris to enter the system, which may lead to blockages, contamination or further structural damage.
Problems within a manhole can also indicate wider issues within the drainage system. In situations like this, a drain inspection or full CCTV drain survey may be recommended to assess the condition of the surrounding pipework.
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The Solution
The repair involved restoring the internal structure of the manhole and re-rendering the damaged areas to create a smooth, sealed finish.
This type of repair is a key part of effective drainage repairs and is important because it:
- Protects the structure from further deterioration
- Ensures proper flow through the drainage system
- Prevents leaks and water ingress
- Extends the lifespan of the manhole
All work was carried out carefully to ensure the manhole was fully restored and functioning correctly.

Why This Type of Repair Matters
A damaged manhole is often a sign of deeper issues within the drainage system. Ignoring the problem can result in more serious and costly repairs over time.
Professional drainage services in West Sussex often involve identifying and resolving these types of issues early, preventing damage from spreading through the system.
By carrying out timely drainage repairs, you can avoid disruption and maintain the efficiency of your drainage system.
When to Consider a CCTV Survey
While visible repairs address immediate issues, some problems may exist deeper within the drainage system.
A CCTV drain survey allows a drainage specialist to:
- Identify hidden damage within pipework
- Locate blockages or build-up
- Assess the overall condition of the drainage system
- Provide clear recommendations for further work
If you are experiencing ongoing drainage issues, combining a drain inspection with a CCTV survey ensures that the correct solution is applied.
Keeping Your Drainage System Maintained
Regular inspection and maintenance can prevent small issues from becoming major problems. Addressing damage early, whether within a manhole or pipework, helps avoid costly repairs and unnecessary disruption.
Open Flow Drains provides reliable drainage services in West Sussex, including inspections, surveys and repairs to keep drainage systems working efficiently and safely.
If you are unsure about the condition of your drainage system, professional advice can help identify problems early and prevent further damage.
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