Tile Floor Layout: Cuts, Transitions, and Grout Decisions

Before approving a tile pattern, look at the whole installation area. Mark doors, fixed fixtures, visible edges and adjoining rooms on the layout. Cuts, grout and transitions should work with the exact tile and installation system. That review helps you understand the finished boundaries as well as the appearance in the middle of the room.
Tile Over Existing Flooring: Bond, Height, and Movement

Tile can sometimes go over an existing floor, but the retained layers must suit the selected system. Review support, bond, flatness, movement, moisture and finished height together. If the team cannot establish suitable conditions, removal may be needed. Keeping the old surface should follow an assessment rather than a shortcut assumption.