Manhole Sealing and Refurbishment

Manhole sealing and refurbishment is essential maintenance procedures for an underground utility infrastructure.  Manholes are access points to underground utility networks, such as sewage systems, stormwater drains, water supply, and telecommunications.

Manhole Deterioration

Over time, manholes can deteriorate due to a number of factors, including age, weathering, and exposure to environmental elements.  Sealing and refurbishing manholes are critical to ensure their structural integrity, prevent water infiltration, and maintain the safety and functionality of the utility systems they access.

Manhole access to drainage chamber
Manhole access to drainage chamber

Leak-tight Manhole Sealing

Exjet provides a leak-tight, chemical-resistant solution with fast turnaround.  Refurbishing manholes and chambers to a ‘better than new‘ standard.

  • Leak sealing
  • Water Stop Injection Systems
  • Concrete Repair Systems
  • Protective Coatings

Minimise Your Costs

Exjet can help minimise your costs with timely remedial and refurbishment services from man entry sewers to the smallest chambers.

Using the most advanced grouts and resins, we can seal leaks in manholes stopping any ground water from entering them without costly digging or rebuilding.

Here are some key aspects we consider with manhole sealing and refurbishment


Assessment and Inspection

Before any sealing or refurbishment work begins, a thorough assessment and inspection of the manhole is conducted. This includes evaluating the condition of the manhole’s walls, base, cover, and any associated components.

Cleaning and Preparation

Manholes are often cleaned to remove debris, sediments, and any existing coatings or sealants. Proper preparation ensures that new materials adhere effectively.


Sealing involves the application of sealants or coatings to the interior surfaces of the manhole. These sealants create a watertight barrier that prevents groundwater infiltration, which can lead to soil erosion and compromise the structural integrity of the manhole. Exjet uses the most advanced grouts and resins for a professional finish.

Structural Repairs

In some cases, manholes may require structural repairs due to cracks, corrosion, or other damage.  These repairs typically involve patching or lining the manhole to restore its strength and integrity.

Replacement of Components

During refurbishment, damaged or deteriorated components like the manhole cover, ladder, or steps may need to be replaced to ensure safety and functionality.

Anti-Corrosion Measures

Depending on the materials used in the manhole construction and the local environment, anti-corrosion measures may be applied to extend the life of the manhole and prevent future deterioration.

Safety Considerations

Safety is paramount during manhole refurbishment. Proper ventilation and confined space entry protocols are followed to protect workers who enter the manhole.

Quality Assurance

Quality control measures are implemented to ensure that the sealing and refurbishment work meets industry standards and regulatory requirements.

Environmental Impact

The materials used in manhole sealing and refurbishment should comply with UK environmental regulations. Minimizing the impact on the surrounding environment is an important consideration.

Documentation and Record-Keeping

Detailed records of the refurbishment work, including before-and-after photos, are often kept for regulatory compliance and future maintenance reference.

Manhole sealing and refurbishment is an ongoing process to ensure the longevity and reliability of underground utility infrastructure.

Regular maintenance helps prevent costly emergency repairs and service interruptions, ensuring the continued functioning of essential services like sewage, water supply, and telecommunications. It also contributes to the overall safety and sustainability of urban infrastructure.

Get Great Advice from Exjet

For further information or to discuss your individual requirements please call 0800 328 6655 or email today to speak to a professional.