Tiling system for decking

A tiling system for forming or covering a deck, wherein said system comprises:

• a plurality of n tiles;
• a plurality of n underlay units to be secured underneath the tiles with peripheral edges of the tiles mutually adjacent and spaced apart with open gaps between the peripheral edges of the tiles;
• and
• a non-adhesive securing arrangement for securing the underlay units to a supporting structure, wherein:
• the tiles are formed of synthetic plastics material;
• each said underlay unit has outer peripheral lateral edges in each direction which are in alignment with the peripheral edges of each said tile;
• the tiles and the underlay units are formed with a respective connection arrangement comprising resilient teeth engaging in corresponding recesses configured and arranged to locate each tile centrally and in alignment with a corresponding underlay unit, the resilience of the teeth allowing each said tile to expand and contract laterally as temperature varies while remaining connected to the underlay unit secured underneath the respective said tile, wherein the teeth are positioned inwardly from a respective outer peripheral lateral edge of the underlay units and comprise a laterally extending spur that extends towards the respective outer peripheral lateral edge so as to be configured to snap-fit engage a respective recess of the tiles;
• and
• projections extend laterally from each of the outer peripheral edges of each adjacent underlay unit to prevent expansion of the underlay units,
• in use thereby to mutually separate the adjacent outer peripheral edges of the underlay units, and hence mutually separate edges of the tiles connected respectively to the underlay units to form said open gaps.