SUDS Attenuation Solutions

Environmentally friendly, effective SuDS attenuation

Hydrorock natural aquifer blocks are just that, natural aquifers. They are manufactured from stone wool to absorb water like a sponge and retain it, before slowly dispersing it.

This natural attenuation system uses the absorption power of Hydrorock blocks, with an outer impermeable membrane to retain water in the module which is then released into the nominated outlet system.

In addition, our Hydrorock attenuation systems can be used with other Hydrorock SuDS systems such as infiltration, ClaySolve, rainwater harvesting and irrigation, according to site conditions such as soil health and structure.

Enhancing the capture and use of valuable rainwater directly on site supports better soil quality and stability, while also reducing environmentally damaging runoff and waste.

Maintenance-free lifetime system integrity

• A solid structure, with a loading strength of up to 4,000 kg per m², Hydrorock systems prevent the risks associated with solutions that create underground voids.
• The geotextile membrane wrap stops root penetration and soil influx keeping the natural aquifer blocks intact and structurally sound.

Because of these properties, there is no requirement for routine maintenance and the lifetime integrity of the whole system is ensured, with consistent operational performance maintained.

Helps solves the challenge of awkward sites and limited spaces

The unique versatility and flexibility of this system, right up and during installation, makes it ideal for green or brown field new builds, or retrofitting within the built environment.

Separate modules can be installed retrospectively alongside existing installations and other underground obstacles, with ease. It is even possible to position blocks next to standing buildings.

Cost-effective construction with optimal land use

Hydrorock blocks come pre-wrapped, avoiding the need for post-install work and therefore limiting excavation requirements to only be as large as the volume required.

Being a solid composition, the system can be installed in close proximity to buildings, maximising site potential.

What’s more, by placing a series of smaller modules across a site an extensive construction exclusion zone is avoided, which would normally be required around a centralised underground crated water sump in a large void. This enables the construction of more properties, increasing the value of a development.