One advantage of a wall-hung toilet is that its finished height can be planned before the wall is closed. The result depends on the carrier frame, pan, floor build-up, tile thickness and the users—not simply on a generic height quoted for wall-hung WCs.
Finished floor changes the reference
The frame is installed before the final floor and wall finishes. Screed, underfloor heating, tile and adhesive can change the relationship between the frame setting and the finished seat height.
User needs matter
A slightly raised pan may be more comfortable for some users, while a standard position may suit others. Children, older users and reduced mobility should be considered during planning.
The pan and frame must agree
Use the exact pan, frame and installation drawings. A different ceramic shape, seat thickness or mounting arrangement can change the finished result.
Check before closing the wall
Confirm height, level, waste alignment, pan support, flush plate position and access before tiling. A hidden frame is difficult to adjust after the finished wall is complete.
Read about why the tile is not supporting a wall-hung WC, or see accessible bathroom planning.