Stormcrate55 Soakaway Crate (1200 x 600 x 347mm, 0.25m³) with Connectors is a heavy-duty modular underground attenuation and infiltration crate designed to manage stormwater runoff sustainably on domestic and commercial properties.

• Rainwater Infiltration (Soakaway): Buried underground to temporarily store rainwater collected from roofs, driveways, or patios and slowly release (infuse) it back into the surrounding soil, preventing surface flooding and waterlogging.

• Attenuation Storage (Tanking): Can be wrapped in an impermeable geomembrane to act as a retention tank, temporarily holding excess water before slowly releasing it at a controlled rate into a storm sewer or watercourse.

• Sustainable Drainage Systems (SuDS): Helps meet modern planning and environmental requirements for managing surface water run-off on site, reducing the strain on public drainage networks.

• Sub-Base Replacement / Structural Void: Provides a high load-bearing underground void beneath permeable paving or driveways, storing large volumes of water without compromising the structural integrity of the ground above.

Available for collection from our Rugby branch or local delivery using our own fleet.

Delivery is kerbside and the final offloading position is always subject to safe access and the driver’s discretion.

Please tell us before delivery about:

• Narrow roads or restricted entrances
• Parked vehicles or limited turning space
• Overhead cables, trees or other obstructions
• Soft, sloping or unsuitable ground
• Any other access concerns

Enter your postcode on the product page to check your delivery area. We’ll confirm the delivery date after your order is placed.

What is the storage capacity of a single Stormcrate55 crate?

Each crate has a nominal volume of 0.25 cubic metres ($250\text{ litres}$) and boasts a high void ratio (typically around 95%), meaning 95% of the crate's volume is available for holding water.

How many crates do I need for my property?

The required number of crates depends on the impermeable catchment area (roof or driveway size), local rainfall intensity data, and the percolation (drainage) rate of your soil. A professional calculation or percolation test is usually required to size a soakaway accurately.

What load-bearing capacity do Stormcrates have?

Stormcrate55 crates are engineered for heavy-duty applications. When installed at the correct depth with proper backfill and sub-base construction, they are suitable for domestic vehicle parking, driveways, and landscaped areas under standard traffic loads.

What is the purpose of the 4 connectors included with the crate?

The connectors (or clips) are used to securely interlock multiple crates together horizontally and vertically, forming a stable underground matrix or tank structure and preventing shifting during backfilling.

What is the minimum installation depth for a soakaway crate?

For domestic driveways or pedestrian areas, crates typically require a minimum depth of cover (often 500mm to 900mm of compacted sub-base and soil above the top of the crates) to protect them from surface loads and frost heave. Always check manufacturer guidelines for your specific loading requirements.