The practicalities by surface
Walls are the format's easiest win: fewer grout lines to clean, slab-like calm, and shower walls that read as planes. The demands are flatness, appropriate setting materials with full coverage, and support during cure; heavy panels also want two sets of hands and honest handling equipment. Edge and corner treatments, mitered or profiled, become design decisions at this scale.
Floors reward and warn in equal measure: expanses of uninterrupted tile look superb and demand flatness plus lippage control systems; and traction deserves attention, since larger smooth surfaces offer fewer joint lines underfoot. In showers, the slope conversation rules: single-plane slopes to linear drains suit big tile naturally, while center drains with compound slopes push toward smaller formats or accept visible cut geometry around the fall.
Cutting and waste round out the plan: large tiles cut with saws and score systems that reward skill, outlet and valve holes land mid-tile more often, and each mistake costs more material than a mosaic ever would. Order overage accordingly, and treat leftover full tiles as attic stock, the same-lot repair insurance every tiled room should hold.
