General notes for grassed areas
The general level should be within 10mm and root-zone can then be used to smooth off prior to laying the stable grass. Back fill the StableGRASS with root zone and sweep level with the top surface.
After back filling with root zone the area should be watered thoroughly before seeding to ensure the seed has the best chance of germinating. The soil will settle below the top surface and this is what is required to ensure that traffic will not be directly in contact with the grass roots. Regular watering should be carried out until the seed is well set.