Type D: Rainwater Drainage & Buffer System


Hydrorock® infiltration blocks drain and buffer surface and rainwater in an environmentally friendly way. This unique natural material absorbs excess surface and rainwater with a capacity of 94% of its volume. The filter cloth ensures gradual infiltration into the surrounding soil.

Efficient Rainwater Buffer
Hydrorock® is a new type of rainwater buffer that stores more rain and groundwater but requires less digging. As a result, Hydrorock blocks offer more water absorption and more efficient infiltration and drainage.

•Drainage to prevent flooding on pavings, in gardens and around buildings and sports fields.
•Ideal for drainage and infiltration of rainwater in houses with thatched roofs.
•Prevents flooding in rural areas.
•Local rainwater buffering and drainage. Supplements groundwater in a natural way.
•Prevents soil dehydration. Trees and plants enjoy rainwater for longer.
Hydrorock® is made of stone wool, a 100% natural material. It remains underground for decades in an optimum condition. Hydrorock® withstands erosion from plant and tree roots and continues to work well for years. The cotton-based filter cloth membrane does not get mouldy or rot. It has a high breaking strength and resists natural substances in the soil.

Vertical or Horizontal Installation
Hydrorock® blocks have a fine, unidirectional fibre structure. A horizontal fibre direction promotes drainage while a vertical fibre direction promotes infiltration. For drainage of surface and rainwater, the blocks should be positioned horizontally. For buffering and infiltration of rainwater, the blocks should be positioned vertically


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Tech Data



Hydrorock® has a load bearing capacity of up to 4 tonnes and if fully SUDS compliant. It is an effective and sustainable way to prevent flooding, separate rainwater discharge and preventing dehydration of the soil without the need for piping. Made...
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T(0161) 212 1618
WVisit Hydrorock's website
 Piccadilly House, 49 Piccadilly Gardens, Manchester, Greater Manchester, M1 2AP

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