Press down on the tile and wiggle it to embed it firmly in the thin-set. Then go to the opposite wall and find the other end of the joist. Measure at intervals of 16 or 24 inches from the first joist to locate the others. Seal grout to keep mildew and mold from growing into the grout. Step away every so often to make sure the tiles are still aligned visually. If you loved this report and you would like to receive extra details with regards to http://www2k.biglobe.ne.jp/~kao-nori/jawanote.cgi?...