When you want to remove concrete or decking, you’re often left with rubble, and if you really want to get a nice lawn for your garden then you must get the right amount of soil laid down first.
Once you have the gravel and rocks left, you should aim to level out the surface with membrane, and this will ensure your law in not uneven. It’s important to get the basics done right at the beginning before you run into problems later down the line.
Once the membrane has evened out the surface you should aim to lay at least 6 inches of top soil, and it will help your lawn stay green. It’s also important to consider drainage, and make sure any water has an escape route underneath the soil membrane and turf.