Flowplumb plumbing
Civils Systems
Ridgistorm - XL
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Available Sizes

*750mm and 900mm as a sealed system


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.

WRc Approval

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.

Key Benefits

 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
 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
BBA Certificate

Filters in large diameter pipes

Step irons or ladders


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


Address: 36 Market Square Toddington, Bedfordshire, LU5 6BS, United Kingdom
Phone: (+44) 1582 807 363 / (+44) 1525 634 255
Fax: (+44) 1525 634 266


Email: enquiry@flowplumb.com