What kind of turf subbase allows for the best drainage?

The ideal sub base for artificial grass should be at a thinness about 4” of which 2-1/2” to be the bottoms layer of drain rocks compacted at 90%, and 1-1/2” to be top layer of decomposed granite also compacted at 90%. Such base system will provide the best drainage for your turf. Please visit this link for general installation guidelines: https://www.globalsynturf.com/installation-guides. If you have any further questions, please feel free to call us at 877 796 8873, or email us at [email protected], thank you.