A backsplash is a finish layer that must coordinate with uneven walls, electrical devices, cabinets and the exact countertop installation.
Decide the stopping points
Plan where tile ends at windows, open walls, range hoods and cabinet edges. Awkward slivers and exposed edges often result from leaving these decisions to installation day.
Coordinate outlets and switches
Device locations and cover plates should be reviewed before tile. Electrical changes may require qualified work and approvals.
Choose for cleaning and repair
Large tile reduces grout lines; small tile follows irregular walls more easily. Natural stone and specialty finishes may require sealing or gentler cleaners.
Order with waste and future repair in mind
Pattern, diagonal layout and many cuts increase waste. Keep labelled spare material because future dye lots may differ. Use the backsplash calculator for area and box count.