Nominal and actual dimensions
Product names may use rounded nominal sizes. Use the actual dimensions and stated box coverage when planning a purchase.
Joints affect layout
Grout-joint width changes the installed module slightly and can affect how cuts land at edges. Dry-lay a representative row before committing to the starting line.
Box coverage is decisive
Retailers normally state square metres per box. Convert your area plus waste into whole boxes using that figure, then verify batch and shade codes.
Practical checklist
- Do not mix box coverage from different formats.
- Plan visible edge cuts before installation.