The differential thermal and moisture movements associated with the background substrate and tiles can disrupt or break an inadequate bond within the tiling system. Effective adhesion of tiling requires: good adhesion of tiles to the substrate, the use of a suitable adhesive for the substrate and conditions, dry, sound backing and substrate, and provision for movement joints in large areas of tiling.This Good Repair Guide gives advice on how to prepare the background surface, apply the adhesive, build in movement joints and apply the grouting.