Using a permeable surface as an alternative to concrete

Stormwater flow reduction - Howard & Libby in Maroondah

While designing the carport that was being installed next to our house, we decided not to use a traditional concrete surface. Concrete would suffocate the ground underneath and increase stormwater run-off from the property. Our theory was there’s no chance of rainwater becoming contaminated stormwater if it’s able to soak into groundwater.

Instead, we chose to install a permeable surface based on a product called GEOHEX. Sheets of plastic hexagons are laid on a sand/screening base and then filled with aggregate to provide a stable, permeable surface. As well as being the ideal product for our carport, GEOHEX is made from 100% recycled post-consumer plastics

Five years later, we are happy with our choice. Rainwater soaks into the ground instead of running into a stormwater drain. The nearby plants are thriving by taking advantage of the extra water supply coming from rain that falls on the permeable area. GEOHEX also lives up to the claims of limiting any horizontal or vertical surface movement. The surface resists car tyres forming ruts, only requiring the occasional raking to even out any small aggregate movements.