Standard installation for artificial grass is onto a cracker dust substrate. Existing sand is replaced with 50-100mm of cracker dust. The cracker dust is compacted to create a firm base for the synthetic turf. The firm base stops movement from foot traffic and water erosion. Cracker dust provides a porous base for the artificial grass. Artificial grass has drainage holes punched into the backing to allow water to pass through. As the cracker dust is porous, water can drain straight through the artificial grass without the need to create an angle of runoff as you would with a hard surface such as paving or concrete.
When artificial grass is installed onto a non-porous surface such as concrete, water is unable to drain into the substrate. Instead, it will need to run off, as it would if the grass weren’t installed.
