Permavoid is a geocellular system designed to provide shallow ground water storage, attenuation or infiltration within a pavement structure. It is used in place of a traditional sub-base.
With a 95% void ratio, Permavoid is a highly efficient modular SUDS solution that can be built up to a total void volume depending on projected run off values. Its unique jointing mechanism means it has exceptional strength, providing an interlocked ‘raft’ that will support structural loads across the most heavily trafficked areas. Permavoid can be used directly below Infilta block paving or Drain Asphalt surfaces, or below impermeable top surfaces in conjunction with a source control system such as Permachannel.
Key Benefits
95% void ratio
Providing greater water storage capacity and reduced excavation and disposal costs.
Modular units
Allow flexibility of shape – ideal for shallow excavation systems, narrow strips or use in restricted areas.
Lightweight yet robust
Excellent health and safety and installation benefits.
100% recyclable
All Charcon Permavoid products are manufactured using recyclable materials to help you meet legislative guidelines on the environment, your own CSR obligations and those of your customer.
Cost effective
Shallower applications reduce excavation costs.
View the full range
Infilta
The permeable blockpaving system
Infilta is a rectangular block paving system that allows infiltration of surface water into underlying SUDS storage structures.It incorporates 5mm spacers to provide sufficient drainage between blocks and is made from an open graded sub-base that provides further void volume for storing runoff. A tough, durable paving surface, Infilta is available in 8 colours.
Permachannel
Innovative channel system
A proven source control collection system that also acts as a silt and oil interceptor and treatment solution. Permachannel is designed to be laid with little or no gradient to ‘still’ run off and encourage silt deposition within the channel. A weir and baffle outlet separates oil and prevents silt deposits entering the rest of the SUDS system.
Permavoid Biomat
Additional oil retention
For use within Permavoid units, Permavoid Biomat provides floating pollution control. It consists of a low density, high strength buoyant plastic grid that traps and retains any residual or emulsified oils that may be present within the surface water. Permavoid Biomat also provides a habitat for microbes that digest and breakdown oil deposits.
Permafilter Geotextile
Hydrocarbon pollution treatment
A non-woven, dimpled and needlepunched geotextile that retains hydrocarbon deposits while allowing clean water to pass through. Entrapped hydrocarbons from petrol and oil are then biodegraded by naturally occurring micro-organisms in a self-cleansing mechanism.
Geomembrane
Water tight textile
Geomembrane is a heavy-duty polypropylene membrane that combines excellent chemical resistance with robust performance, even on non-smooth surfaces. It creates a water tight seal that minimizes the risk of sub-grade softening in a wide range of applications.