Permeable concrete for sustainable drainage (SuDS) - Topmix Permeable case study

Tarmacs Topmix Permeable can play a fundamental role in the majority of Sustainable Urban Drainage Systems (SuDS) designs, providing a practical, long-term answer to surface water flooding that can be implemented quickly and cost effectively. A new, fast draining concrete pavement solution, it rapidly directs excess water away from streets, parking surfaces, driveways and walkways. Unlike conventional concrete, it has a high void content of between 20-35%. This allows surface water to drain through into the sub-strata and dissipate naturally, reducing the risk of surface water flooding and watercourse contamination.