Why large tile is different
- One broken 24×24 tile = many square feet lost — buy extra
- Lippage risk without leveling clips and very flat substrate
- Heavier sheets — consider hiring for overhead or heavy porcelain
- Use large-format thinset and 1/2 inch notched trowel (follow tile size chart)
Waste factor
Set waste to 18–20% in the calculator for large format or diagonal layouts. Keep two spare tiles stored flat after install.
Leveling clip systems
Clips and wedges hold tile edges flush while mortar sets — essential for 12×24+ on walls and floors. Budget clips per tile perimeter. Remove clips after 24 hours before grouting. Flat substrate still required — clips do not fix wavy subfloor.