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Polypipe PSM1A Polystorm Plastic Soakaway and Attenuation Crate

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Est. Delivery: 2-3 Working Days
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£57.95 Incl. VAT
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Polypipe Polystorm soakaway and attenuation crates are 40 tonne rated and 1m3 can be made up of 5 crates.

Designed for use in lightly trafficked and loaded applications with a load bearing capacity of 40 tonnes/m². The standard Polystorm cellular unit is designed for areas of light to moderate loading. An efficient and versatile solution for SUDS compliant attenuation or soakaway, it is hard-wearing, light weight and provides a 95% void ratio for maximum water capture and retention.

With a quick yet robust interlocking mechanism, they can be combined to create a strong, flexible tank below hard surfaces to store water channelled from building guttering and surface drains. By offering a completely bespoke approach to subsurface water storage, Polystorm gives specifiers and contractors the opportunity to create a wholly unique design to suit the exact demands of their development.

Each unit includes 4 clips and 2 shear connectors. Please note that brick bond connector may be required at additional cost.

  • 95% void ratio - providing greater water storage capacity and reduced excavation and disposal costs
  • Modular units - allow flexibility of shape - ideal for shallow excavation systems, narrow strips or use in restricted areas
  • Light weight yet robust - excellent Health and Safety and installation benefits
  • Easy to handle - unique rounded corners for ease of handling and reduced likelihood of punctures to membranes
  • Cost effective - especially when used as a hybrid, value engineered system
  • Recyclable - 100% recyclable at the end of its useful life
  • Suitable for both attenuation and soakaway systems
  • 50 year design life
  • BBA Approved
  • Hybrid Solutions available


Length:  1000mm
Width:  500mm
Height:  400mm

Please Note
In weak clay soil conditions the maximum burial depth is reduced, please consult Polypipe’s water management solutions technical team on 01509 615100.

* Each unit includes 4 clips and 2 shear connectors.

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Questions & Answers


Does the crate come with clips and shear connectors


I can confirm that the crates to come with everything you require.


What is the maximum buried depth of a infiltration attenuation tank?


There are a few factors that would determine this, which are entirely site dependant. Please feel free to give us a call for more information.


Is this price for one crate or 1 m3?


This is the price per crate - and 5 crates make up 1 cubic metre.

Have a question about this product?


4 / 5 2 reviews
Alex Saunders
3rd May 2020
The product certainly does the job, although one may wonder at first is it strong enough to hold weight of light traffic that will be on top of it. Value for money? £50 approximately for each crate is a bit expensive making my order over £240 with carriage, all to be put in a hole.
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Polypipe PSM1A Polystorm Plastic Soakaway and Attenuation Crate

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