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Ridgistorm-XL is the latest innovative solution to SUDS and stormwater management applications. With a range of large diameter pipes from 750mm up to 2100mm plus the design and product technology features, it offers an effective and adaptable solution, without impacting on the development footprint.

Bespoke pipe profile providing individual stiffness class

Ridgistorm-XL can be engineered to suit any application. By analysing the site conditions and installation parameters, our design engineers can create a solution with the appropriate profile strength and stiffness that is neither over nor under engineered. Our production flexibility allows pipe strength to be produced at varying stiffness classes to meet the design requirements of a project, without the need to step-up pipe specification.

Exceptional leak tightness

Ridgistorm-XL is designed as a flexible structure to minimise the effects of ground movement and deformation and prevent leakage from the pipeline or attenuation structure. Exceptional pipeline integrity is achieved with Ridgistorm-XL due to the reduced number of joints, therefore minimising the number of potential leakage points and removing the risk of groundwater pollution.

Ridgistorm-XL versus rigid materials

Ridgistorm-XL offers a robust, durable and adaptable solution in comparison to rigid materials such as concrete and steel. Due to its longer lengths and lighter weight, Ridgistorm-XL can be 70% cheaper to transport than equivalent size concrete pipes and can be handled and stored much more safely on-site.

Ridgistorm-XL versus rigid materials

Ridgistorm-XL and all pipe profile options, stiffness classes SN2 to SN8 and diameters from 750 to 2100mm are approved by WRC. The approval also extends to all work carried out by Polypipe’s in-house fabrications department, the design software used to engineer the product (for SN1 – SN8) and Ridgistorm-XL’s unique and patented Electro-fusion jointing method, which covers the tensile strength of each joint, the jointing method and Polypipe’s installation manual and guidance.

Typical Applications

  • Ideal for use as large-scale attenuation system
  • Fabricated tanks to any size
  • Light weight for ease of handling and installation combined with high stiffness and durability
  • 100% recyclable
  • 100% recyclable
  • Strong yet flexible design
  • Able to withstand ground movement without leakage
  • WRC Approved
  • BBA Approved
  • Superior hydraulic performance achieved through smooth bore
  • Up to 2100mm diameter
  • Durable materials
  • Excellent resistance to sulphate and chemical attack
  • Longer pipe lengths for improved pipeline integrity and fewer joints
  • Unique patented Electro-fusion jointing system
  • Excellent load bearing capability
  • Water company approved


With a range of diameters from 750mm to 2100mm, Ridgistorm-XL offers a durable and engineered solution to large-scale attenuation and pipeline requirements for use in:

  • Surface water drainage
  • Large-scale attenuation structures
  • Specialist pipeline applications
  • Foul sewers
  • River diversions and culverts
  • Sea outfalls
  • Rainwater Harvesting
  • Air ventilation
  • Renewable energy
  • Bespoke large diameter manholes & catchpits

Available Sizes

  • 750mm
  • 900mm
  • 1050mm
  • 1200mm
  • 1500mm
  • 1800mm
  • 2100mm

Get A Quick Quote

If you have any enquiry about our products or require a more complex quote please feel free to contact us.