Inspection Chambers

Our extensive range of manhole inspection chambers includes surface water and foul water inspection chambers, suitable for adoptable and EN1401.1 non-adoptable drainage schemes.

From level-invert shallow inspection chambers to non-man entry chambers for deep drainage and everything in-between. We also supply bespoke inspection chambers and catchpits built to your specification.

The full range of inspection chambers include 320mm, 330mm, 460mm, 600mm and 460 x 610mm inspection chamber bases & risers, available with a variety of inlet configurations.

Our unique inspection chamber sets are supplied as kits with options to select your preferred base and cover, along with 3no riser sections.

PPIC (polypropylene) inspection chambers offer the installer a cost-effective, lightweight and easy-to-install alternative to brick or concrete manhole chambers. Our foul water PPIC inspection chambers are compatible with 110mm and 160mm uPVC drainage systems. Our surface water inspection chambers are available in a wide range of configurations for 110mm & 160mm uPVC and 150mm, 225mm, 300mm and 375mm twin wall pipe systems.

Our bespoke chamber fabrication service can fulfill most non-standard inspection chamber designs.

We also supply a wide range of inspection manhole covers to suit our chambers.

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  • What are inspection chambers?
    Inspection chambers, also known as manholes or access chambers, are underground structures installed in drainage systems to provide access for maintenance, inspection, and cleaning purposes. They are typically made of durable materials such as plastic or concrete
  • Why are inspection chambers important in a drainage system?
    Inspection chambers serve as access points for monitoring and maintaining the drainage system. They allow easy inspection of the pipes, facilitate clearing of blockages, and enable the connection of different drain lines.
  • What are inspection chamber covers?
    Inspection chamber covers are removable lids or covers that are placed on top of the inspection chambers. They provide a secure and protective barrier, preventing unauthorized access and ensuring safety.
  • What materials are commonly used for inspection chamber covers?
    Inspection chamber covers are available in various materials such as plastic (PVC), cast iron, galvanized steel, and composite materials. The choice of material depends on factors like load-bearing capacity, durability, and the specific requirements of the installation.
  • What are the different types of inspection chamber covers?
    There are different types of inspection chamber covers available, including solid covers, slotted covers (with holes or slots for ventilation), locking covers (for added security), and recessed covers (to blend with the surrounding surface).
  • How do I choose the right inspection chamber cover?
    When selecting an inspection chamber cover, consider factors such as the anticipated load (pedestrian or vehicular traffic), the location of the chamber (on a road, driveway, or garden), and any specific aesthetic or safety requirements.
  • Are inspection chamber covers durable and resistant to environmental conditions?
    Yes, inspection chamber covers are designed to withstand environmental conditions such as heavy loads, weathering, and exposure to chemicals. High-quality covers made from suitable materials are durable and long-lasting.
  • Can inspection chamber covers be customized or replaced?
    Some manufacturers offer customizable inspection chamber covers to meet specific requirements, such as incorporating company logos or specific designs. If a cover gets damaged, it can be replaced by choosing a compatible cover of the appropriate size and material.
  • How often should inspection chambers be inspected?
    It is advisable to inspect the inspection chambers at regular intervals, depending on the usage and condition of the drainage system. Regular inspections help identify any blockages, leaks, or structural issues that may require attention.
  • Are there any regulations or standards for inspection chambers and covers?
    Building codes and regulations may stipulate specific requirements for inspection chambers and covers, including load-bearing capacities and accessibility standards. It is important to comply with local regulations and consult with professionals to ensure proper installation and adherence to standards.