PAVINGCALCULATOR Home » Products » Permeable Paving Permeable Paving Enhance your driveway, paths and outdoor living spaces with permeable paving giving a natural stone finish. GrassPave Most grass pavers made of concrete tend to heat up causing the grass to dry out and scorch. GrassPave solves this problem. SurePave™ The unique design of this system offers excellent ground reinforcement by creating a cell structure that can be filled with either grass or gravel. SmartPave Metro SmartPave prevents stones moving while creating a flat, firm pavement ideal for pedestrians, cyclists and lighter vehicles.