Do you need a sub base for artificial grass?

The answer is yes. There are two main purposes for having a sub base for artificial grass:

1. To have a proper drainage system underneath the grass

2. To provide a solid (compacted) and smooth surface to lay grass

In the turf industry, there is a saying: Your turf is as good as its base gets. So building a good sub base for artificial turf is considered one of the most important steps. Laying turf on soil or unprepared bases can cause a lot of problems such as water not draining well, turf wrinkles, bumps and dents throughout the turf surfaces: such results make your lawn look terrible and people might blame artificial grass itself without understanding those are installation related issues. 

To learn how to prepare a good sub base for artificial grass, please visit this link: https://www.globalsynturf.com/installation/