Sub-Base

For most artificial turf installations, the standard recommendation is to have a sub-base layer of approximately 3” to 4”. This depth is generally sufficient to provide the necessary stability, support, and drainage for the turf. The thickness of the sub-base plays a crucial role in ensuring the artificial grass remains flat and even over time, preventing wrinkles and divots that can occur due to soil movement or heavy usage. Additionally, a sub-base of this thickness helps in effective drainage, allowing water to percolate through and reduce the risk of water logging or surface pooling, which can be detrimental to the turf’s longevity and appearance.

However, the required depth of the sub-base can vary based on climate and usage conditions. For example, in residential installations located in arid climates, where there is less concern about drainage and soil movement, a sub-base of about 2 inches might be adequate. Conversely, in colder climates, where the ground is subject to freeze-thaw cycles that cause expansion and contraction of the native soil, a thicker base layer is advisable. This thicker layer helps to buffer the artificial turf from these movements, maintaining its integrity and preventing damage that can arise from the shifting ground.

Thus, the selection of sub-base depth should be tailored to the specific environmental conditions and usage requirements of the installation site. Commercial applications typically require at least 4″ of sub-base in order to withstand the greater volume of foot traffic.