Manhole Rehabilitation and Waterproofing

Inspection chambers and manholes are essential components of every sewer and stormwater drainage system. They provide access for inspection, maintenance and cleaning while connecting different sections of the network.

Over time, constant exposure to wastewater, groundwater infiltration, chemical attack and structural movement can lead to concrete deterioration, leaking joints and loss of watertightness.

At REVIPOX we specialise in the rehabilitation and waterproofing of manholes and inspection chambers, restoring their integrity using advanced epoxy lining systems without the need for complete reconstruction in most situations.

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Technical Assessment Before Any Repair

Every chamber is different.

Before recommending any repair solution, we carry out a technical assessment to determine the condition of the structure, identify the source of water ingress and evaluate the integrity of the pipe connections.

This allows us to recommend the most appropriate rehabilitation method rather than applying a generic coating to an already deteriorated structure.

Typical Problems We Repair

Our rehabilitation systems are designed to address problems such as:

• groundwater infiltration;
• leaking pipe penetrations;
• open construction joints;
• deteriorated concrete;
• damaged benching channels;
• broken chamber floors;
• exposed reinforcement;
• concrete erosion;
• cracks;
• localised material loss;
• ageing inspection chambers.

Waterproofing Is Only One Part of the Rehabilitation Process

Applying epoxy over a damaged chamber does not solve the underlying problem.

Long-term performance depends on the quality of the preparation work carried out before the waterproofing system is installed.

At REVIPOX we treat every project as a complete rehabilitation process where structural preparation, repairs and waterproofing work together to restore the chamber's long-term performance.

Surface Preparation

Proper preparation is the foundation of every successful rehabilitation.

Depending on the condition of the chamber, preparation may include:

• mechanical cleaning;
• removal of deteriorated concrete;
• crack preparation;
• wall repairs;
• reconstruction of damaged areas;
• benching reconstruction;
• joint sealing;
• treatment of leaking pipe penetrations.

Only after the chamber has been properly prepared do we install the epoxy waterproofing system.

Wall and Floor Restoration

Many chambers suffer from severe concrete deterioration caused by continuous wastewater flow, abrasion and chemical attack.

Before waterproofing, damaged surfaces are repaired and re-profiled using specialist repair mortars, creating a sound and uniform substrate capable of supporting the protective lining system.

Proper substrate preparation significantly improves adhesion, durability and long-term performance.

Repair of Pipe Connections

Pipe penetrations are one of the most common sources of infiltration.

Movement between pipes and the chamber structure can create gaps that allow groundwater to enter or wastewater to escape.

Where necessary we repair and seal every connection before the waterproofing system is applied, ensuring continuity between the chamber and the connected pipelines.

Reconstruction of the Channel Base

The chamber benching and flow channel are subjected to continuous hydraulic wear.

Over time this may result in:

• erosion;
• broken channels;
• concrete loss;
• standing water;
• poor hydraulic performance.

Where required we reconstruct the channel profile before installing the protective epoxy lining.

Epoxy Waterproofing System

Once all repairs have been completed, a continuous epoxy lining is applied to the entire internal surface of the chamber.

The finished system provides:

• complete watertightness;
• chemical resistance;
• abrasion resistance;
• seamless protection;
• smooth internal surfaces;
• extended service life.

Typical Applications

Our rehabilitation systems are suitable for:

• sewer manholes;
• inspection chambers;
• stormwater chambers;
• drainage chambers;
• junction chambers;
• interceptor chambers;
• commercial buildings;
• residential developments;
• industrial facilities;
• underground infrastructure;
• car parks;
• municipal drainage systems.

Typical Rehabilitation Projects

Leaking Construction Joints

Repair and sealing of leaking joints followed by complete waterproof lining.

Damaged Chamber Floor

Reconstruction of the benching channel before epoxy lining.

Leaking Pipe Connections

Repair of defective penetrations and restoration of watertightness.

Ageing Concrete Chambers

Complete rehabilitation without replacing the existing chamber.

Stormwater Inspection Chambers

Restoration of deteriorated concrete and long-term waterproof protection.

Why Choose REVIPOX?

Specialists in Sewer Infrastructure Rehabilitation

Our work focuses exclusively on the inspection, repair and rehabilitation of sewer and stormwater networks.

Engineering-Led Approach

Every project begins with a technical assessment to identify the root cause of deterioration before repairs are specified.

Complete Rehabilitation Process

Surface preparation, structural repairs, joint treatment and epoxy waterproofing are all carried out as one integrated system.

Tailored Solutions

No two chambers deteriorate in the same way. Each rehabilitation strategy is adapted to the condition of the structure and the operational requirements of the network.

 

 

A recommended sequence would be:

• Existing chamber condition.
• Mechanical cleaning.
• Surface preparation.
• Reconstruction of the channel.
• Pipe penetration repairs.
• Epoxy lining installation.
• Completed rehabilitation.

Need to Rehabilitate a Manhole or Inspection Chamber?

If your inspection chamber is leaking, suffering from concrete deterioration, damaged joints or groundwater infiltration, REVIPOX can provide a technical assessment and recommend the most appropriate rehabilitation solution.

Contact our technical team to discuss your project or request a quotation.