Tiles often move during the drying process so to avoid costly repairs and dissapointment use the GLS Tile Levelling Systems during installation process to ensure you end up with lippage free and level surface.The GLS Wedged Tile Levelling System precisely positions and levels all types of ceramic, porcelain, stone tiles etc on both wall and floor surfaces allowing you to produce consistent spacing between tile as well as a perfectly level and lippage free tile surface.The GLS Spin Levelling System prevents uneven tiles when laying floors, especially large format tiles.It features a free-spin design that allows the cap to spin down the base screw with minimal effort. This allows installers to tighten the cap with only one hand, which is especially useful for installing large format tile. When installation is finished simply kick off the caps to remove.