What has to be ready before bathroom tile goes in
The surface under the tile has to be flat, stable and right for the room. A dry bathroom wall is mostly a layout job, while a shower wall or tub surround also needs a wet-area plan before the tile goes up.
Renan checks the substrate, plans the cuts around visible edges and handles the setting work. For wet walls, shower waterproofing or Schluter KERDI may be part of the assembly before finish tile.
Bathroom floors have their own prep questions. Renan may need to clean and correct the surface, stiffen the layer below, or flatten low spots before the tile pattern matters.

