change of plan , the tiles are coming off , i didnt like the hollow sound of the window cill reveal , turns out a dodgy piece of ply had been used , and none to good as well , so i need to make that good and off we go , now what are you all going to suggest for adhesive , as i want to do a silvery grout i fancy using the mapei ultra colour stuff as the Silicon will match , what adhesive would i team that up with , thanks for the help again :lol: