knapdog

In our new extension we have the shell of a wet room 1.8m x 1.7m. In it will be a WC and washbasin. We have NuHeat UFH installed with the floor screeded forming a dip towards the pipe that will be the drainage for the shower. The drainage pipe is a good 45cm away from any wall and the floor always sloping towards the pipe. Now, what should I really be doing before tiling? I have purchased mosaic tiles for the floor and will be using flexible waterproof adhesive and have standard wall tiles with a waterproof adhesive. The floor tiles are natural stone and will need to be sealed when finished. Do I need any preparation for the floor such as coating it with watered down Unibond? Do I tile the floor first or the walls? Any help will be appreciated as I have never tackled a wet room before.