Control and manage your rainwater surface water runoff – our storm crates can be used for both attenuation or ground infiltration in a variety of applications.

We supply a range of stormwater attenuation solutions, including stormwater crates and soakaway crates. We can also install too.

Installed underground to prevent flooding, our crates provide you with a cost-effective solution. As they are designed to incorporate high structural strength, they can feature void ratios of up to 97%, offering enormous amounts of space and surface area through which water can infiltrate.

These storm crates operate as soakaway crates – meaning that they can allow water from the surrounding soil to seep into them, aiding soil drainage, and, more importantly, they allow the attenuated storm water to slowly soak away into the earth after it is collected.

Once the storm abates, the ground will naturally begin to slowly release the water it has absorbed, allowing your soakaway crates to drain away at the same rate as the natural movement of groundwater. Thanks to this method of drainage, your attenuated storm water will not cause damage to the soil or cause flooding or waterlogging – it will simply soak away.

Why choose our crates?

High Strength Design - Cotterill Civils High strength design

Designed to withstand up to 80 ton vehicle loadings, our crates offer you the flexibility to install under heavily trafficked areas such as car parks, yards and roadways. We can go even further towards looking after the environment by offering you a recycled material crate for pedestrian and soft landscape areas, and the use of a soakaway crate helps provide one of the most environmentally-friendly stormwater drainage solutions.

Maintenance Free - Cotterill Civils Maintenance free

As long as steps are taken to remove silt and grit from the incoming pipework the crate system is virtually maintenance free.

Lightweight & Easy To Handle - Cotterill Civils Lightweight & easy to handle

Our crates are incredibly easy to install as they are lightweight and easy to handle. This product efficiently stacks and locks together quickly, in turn enabling you to build up you tank faster.

High Void Ratios - Cotterill Civils High void ratios

High void ratios of 97% providing high storage volume capacity for stormwater attenuation.

SuDs Compliant - Cotterill Civils SuDs compliant

Our geocellular crate system is approved for use in Sustainable Drainage System applications. The design and functionality of a soakaway crate means that with no power input and no manual activation required, the attenuated storm water will simply seep into the groundwater and disperse naturally.

Environmentally Conscious - Cotterill Civils Environmentally conscious

We also offer an environmentally conscious solution made from recycled material for pedestrian and soft landscape areas, to comply with environmental objectives.

Installation service

We’re one of the UK’s leading specialists when it comes to managing stormwater. We can design and install a stormwater attenuation solution to meet your specific needs and budget.

Trading for almost 30 years, we’ve built up a reputation for our excellent service, dedicated team and expertise. Time and time again our customers tell us they like working with us because we share the same core values as them – hard-working, friendly, professional and honest. We also adhere to high-quality standards and are ISO 9001, ISO 14001, Achilles and Constructionline accredited.

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Case study: Installation of stormwater attenuation solution at Bournville RFC

Bournville RFC had been gifted a new site for its rugby club by Birmingham City Council and Sport England in Edgbaston, Birmingham.

They had appointed leading sports turf contractor, Phil Day Sports, to install the all-weather artificial grass pitch and two full-size grass pitches. As part of the project, Phil Day Sports asked us to install a stormwater attenuation solution for them to control and manage the runoff from rainwater.

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Soakaway Crates - Cotterill Civils

Soakaway Crate - Cotterill Civils

Inside a Soakaway Crate - Cotterill Civils