Marley Edgemere Smooth Grey (Pallet Of 240)With its leading edge of only 18mm, the Edgemere has been precision engineered to be 40% thinner than standard concrete interlocking tiles. Its large format coupled with a broken bond laying technique make it ideal for quick and easy installation, saving you time and money, and it is versatile enough to be used on pitches as low as 17. 5.