The sub base

What is an Artificial Grass Sub-base?

Within the fake grass industry, the ‘artificial grass base’ is known as the layer of crushed stone- often a combination of Type 1/MOT (50-70mm)  and Granite Dust (20-30mm)- which is installed on top of the original ground before installing the artificial grass.

Do I need to Install Underlay for my Artificial Grass?

When it comes to Underlay or Geotextile Membrane, we highly recommend this as it is placed directly beneath the sub-base to prevent weed growth.

What should be the Depth for the Sub base?

For domestic applications, we recommend a minimum depth of 50mm.

For commercial or public use, such as artificial grass at schools, playgrounds, offices and shops or an area with a very high volume of footfall, we recommend installing a sub-base of between 70mm to 100mm.

Artificial grass on Concrete / Soil / Decking

If you are installing artificial grass to a sound, existing surface, such as concrete or decking, then a sub-base won’t be necessary, as the existing surface will provide sufficient structural support.

If you are replacing a real grass lawn, then you should always install a sub-base. You cannot lay fake grass on the soil.

How do I Level My Sub-base to make it flat?

When it comes to levelling your sub-base, you must start by dropping it to its correct depth all over the required lawn area. This is dependant on existing ground conditions- please refer to our installation guidelines.

Once this is done, you will need to compact the sub-base to make sure it is level. You will need a vibrating plate compactor, which can be hired from your local tool hire shop.

To ensure you have a level surface, guide the plate compactor both up and down, and from side to side, across the entire surface.