A Suitable Thickness Overview for 20mm, 30mm, and 40mm Artificial Grass Rolls Choosing the right artificial grass thickness can transform your outdoor space. This guide compares 20mm, 30mm, and 40mm artificial grass rolls, covering their appearance, durability, maintenance, comfort, and ideal uses. Learn how to select the best thickness based on traffic, aesthetics, climate, budget, and intended use. Read the full blog for all the essential tips!