For an existing grassed surface (which will be most cases), simply mow the existing grass as short as you can, roll SureFlex over the area to be reinforced then pin it to the surface using the ground pins that come with each roll. Use regular pins at around 30cm intervals in each direction, keeping the mesh flat to the ground making sure there are no raised areas. Placed every 30cm in each direction, the 100 pins will cover each roll. You may need extra pins if you’re joining multiple rolls together as you don’t want to leave loose edges.
For new lawns, you can place and pin SureFlex after you’ve sewn the grass seed.