Non-metallic materials for use in surfacing playing areas, sporting areas, tennis courts, cricket pitches, golf courses, golf driving ranges, surfaces for playing golf, bowling greens, areas for playing bowls, hockey pitches, multi-use games areas, playgrounds; non-metallic materials for use in surfacing areas including raised surfaces, raised equipment, raise play equipment; impact absorbing surfaces; surfaces, inter-layers, sub-layers and shock absorbing materials for forming playing areas, sporting areas and shock absorbing surfaces