just been to look at kitchen slashback, the customer already has the tiles which i think are limestone. They are on sheets (9 on each sheet) like mosaics but are 100mm x 100mm. Will i be best just removing the tiles off the sheet and fitting seperate? also which size trowel should i use? they are 10mm thick and feel quite heavy. I'm tiling onto plaster skim, cheers, lee.