You will need to put down a base layer of undercoating so you don't damage the hardwood floors. Then you just mortar in the tiles as normal, start in one corner and work your way out.
Over the hardwood floor it's a bit difficult and tricky. You need someone who is good at this kid of things. If you want to do it youself,remove the hardwood floor ,and then,just simply apply the satillo tiles
Tiling over hardwood floors is not suggested, due to the expansion and contraction of individual planks, this can indefinetly warp any grouting or tile placement.
