Concrete Manholes, Rings & Slabs

We provide a range of concrete manholes to suit your needs and budget.

Our concrete manholes are supplied in a range of diameters and depths. Each of them comes in the form of precast concrete rings, and all of them have a tongue and groove joint to allow them to lock together neatly and easily.

What is a manhole ring?

Concrete manhole rings provide access to foul and surface water drainage systems. A manhole is an opening to a confined space, they tend to be an access point for an underground public utility, meaning inspections and maintenance can take place to them – these tend to be for sewers, electricity, storm drains, etc.

What are the benefits of Concrete Manhole Rings?

  • Concrete manhole rings allow for a quick, easy installation.
  • Manhole rings can be easily sealed against the elements.
  • Precast concrete cover slabs are also available which can be used to cap the manhole chamber and reduce the size of its entry point. Commonly used in deeper manholes, these precast concrete manholes or “landing slabs” are installed at intervals through the tunnel, preventing a long fall or allowing regular resting points along the length of the concrete manholes.
  • With incredibly long lifespans, these sturdy and reliable concrete manhole rings also include ladder rungs for easier access to the lower levels, and can be stacked indefinitely to reach whatever level you need, with far faster construction time than casting the rings onsite would allow for.

Why buy them from us?

We provide a range of concrete manhole rings in a range of diameters and depths. Each of the manhole rings comes in the form of a precast concrete ring, and all of them have a tongue and groove joint to allow them to lock together neatly and easily.
Our manhole rings include fixed double steps or an integrated ladder system for ease of access and safety if and when needed. Our manhole cover slabs are fitted with RD30 lifting sockets Lifting sockets ensure safe lifting onsite and safe loading and transportation.

Once put together, they can be sealed with cement and sand mortar or a bitumen sealant, making them watertight and helping to prolong their lifespan. Able to withstand infiltration and leaking, as well as attack by groundwater and corrosive environments, these precast concrete manholes will remain in pristine condition for many years. Our manhole rings are heavy duty and reinforced to ensure effectiveness, as well as being manufactured in accordance with all British Standards.

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Frequently Asked Questions

Do I need a water-tight concrete ring?

This depends on how you plan to install your manhole. If you plan to install the ring without a concrete surround, you’ll need a water-tight ring to prevent leaks or floods. Water-tight concrete manhole rings are much more robust and don't need a concrete surround, unlike standard concrete rings. A normal concrete ring is effective if you already have a concrete surround for your manhole.

Why do I need a concrete cover slab?

Concrete cover slabs are heavy duty slabs that sit on top of the chamber ring and complete the main shaft of a manhole. They’re installed to create a point of access to the manhole chamber and provide a base for any brickwork before being capped with a manhole cover. They’re sometimes referred to as ‘reducing slabs’ because they reduce the size of the opening into the main chamber.

Do I need a manhole ring with step irons?

A manhole ring with step irons allows safe entry into a manhole and is particularly useful for any deep constructions where it’s not possible to safely lower a worker into the space. It can get fairly dark down manhole chambers, so our fitted step irons come in bright colours to increase high visibility.

Do concrete manhole rings last for a long time?

Concrete is one of the most durable construction materials available. Our concrete manhole rings firmly withstand attacks from corrosive elements and groundwater that can cause erosion. Sealing your concrete manhole rings with sand mortar, cement, or bitumen sealant will prolong their lifespan even further.


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