Large format tile is the current standard for good reason: fewer grout lines make a room calmer and bigger, and there is less to clean. It is also the least forgiving tile to install.
Why it is harder
- The subfloor must be flat within 1/8 inch over 10 feet
- Every tile needs back-buttering for full mortar coverage
- Medium-bed mortar, not standard thinset, or the tile sags
- Levelling clip systems on every joint to control lippage
- Two people to place each piece
Why it costs more to install
The extra is labour and preparation, not the tile: levelling, back-buttering, clips and two people on every piece. The tile cost calculator shows the difference for your floor.
How to spot a bad quote
If a quote for large format tile is the same as for standard tile, the installer is planning to skip back-buttering or levelling clips. You will see the lippage within a week.