Tile Coverage, Layout, and Waste

Floors, walls, niches, and returns have different geometry.

Calculate each rectangle, subtract only openings that truly remove tile, and add small planes individually. Keep floor and wall products separate when coverage or installation requirements differ.

Centered layouts can create more cuts than edge-start layouts.

Tile size plus grout joint forms the repeating module. Diagonal, herringbone, mosaics, borders, and book-matched materials change cut count and offcut reuse. Plan the visible alignment before choosing waste.

A calculator cannot buy a fraction of a carton.

Use package coverage from the actual lot and round upward. Consider reasonable attic stock for future repair, especially when color and caliber vary or the product may be discontinued.

Substrate, waterproofing, mortar, grout, and movement accommodation matter.

Follow product instructions and recognized tile-industry methods. Cracks, deflection, wet areas, and missing movement joints are not solved by ordering more tile; qualified design may be needed.