Why Choose our Soakaway Crates?

Our comprehensive range allows us to offer the following benefits:

• We supply leading UK systems including Polypipe Polystorm and Polydrain Hydrocell alongside our Rainsmart range, all engineered to industry-standard cellular crate specifications used across UK SuDS projects.
• Flat-packed and fully assembled options are available, allowing you to decide whether to save on cost or time on-site
• Our range covers load ratings from 24-tonne pedestrian and garden crates through to 65-tonne crates suitable for driveways and car parks, with heavier 80-tonne+ options available on request for HGV and trafficked-area projects.
• We offer bulk buy deals on some of our most popular crate options, where the more you spend, the more you save
• The modular design of Rainsmart crates has allowed us to create and offer kits for specific and niche drainage applications
• All of our crates are lightweight and easy to transport on-site

Soakaway Applications

Our range of soakaway crates can be used in a variety of applications, including: 

• Underground stormwater management - to reduce flooding
• Infiltration - allowing stormwater held in your tank to seep back into the ground slowly over a period of time
• Attenuation - discharge water from crates slowly to avoid downstream flooding and erosion of waterways
• Rainwater recycling - pumps the excess rainwater back out of the crate system for use in irrigation and reuse
• Grass swales - linear grass-covered gullies which take surface water overland from the drained surface to a storage or discharge system, typically using road verges
• Road drainage - enhancement in both quality and quantity of road runoff
• Bioretention basins - using a channel (like a swale) stormwater can be slowed and treated to desired levels by the placement of check dams
• Sportsfield drainage - assist with flooding and recycling by removing water and storing it underground for future use
• Channel drainage - create a linear shallow open channel to funnel stormwater
• Carpark stormwater tanks
• Septic and leach drains
• Trench soakaway

Installing Your Soakaway Crates

Assembly is a simple process – the only tool required is a rubber mallet which we include with each cubic metre set. One person should be able to assemble a one cubic metre set in 12 to 15 minutes. Check out our video guide on how to assemble flat -packed crates for more information. We also have a step-by-step guide on soakaway crates installation, from excavating your hole, preparing the base and installing your crates.

What Size Should My Soakaway Be?

The design of a soakaway system depends on catchment area, soil permeability (typically established via a soil percolation test in line with Building Regulations Part H), water table clearance and foundation design. Soakaways are suited to sandy or loamy soils and should be avoided on clay or filled ground. For sizing, use our soakaway size guide and calculator, which lists the most popular configurations by roof and site area.