All old lawn, sand or rubble needs to be dug out. You must ensure that you remove any roots or stumps that will break down and could, over time, cause dipping under your new lawn. You may also need to cap sprinklers or remove reticulation.
You will need to excavate to allow 60mm of compressed cracker dust/crushed blue metal, as well as the height of the grass, taking into account how high above the surrounding paving or driveway you want the top of the grass to sit.
After excavation, level the area using a rake and sand spreader.
If boarders are required as a barrier to prevent base crumbling away – now is the time to install them.
SKIP BINS: For a 100mm excavation, for every 10m2 of area you will need 1m3 of bin.