The 18x18 running bond pattern lays the same square 18"x18" tile with a 1/3 offset between rows, rather than the standard 50% half-lap, following industry guidance to limit lippage on tile 15 inches or larger on a side.
Last updated: 2026-07-05
Material breakdown
Format
Qty / Pattern
Area / Pattern
Share
Qty / Room
Area / Room
45.72x45.72 cm
3
0.63 m²
100.0%
44
7.50 m²
Total
3
0.63 m²
100%
44
7.50 m²
About the 18x18 Tile — Running Bond
Because 18-inch tile falls into the size range where ANSI A108.02 recommends a maximum 1/3 offset, running bond on 18x18 tile always uses this reduced ratio rather than the traditional half-lap seen on smaller subway-style tile.
Running bond on a square tile like 18x18 is a deliberate design choice rather than a default, typically selected to introduce texture or break up a large, uniform floor area.
Frequently Asked Questions
What offset should I use for 18x18 running bond?
A 1/3 offset is recommended for 18x18 tile rather than a 50% offset, per ANSI A108.02 guidance for tile 15 inches or larger on a side, to reduce lippage risk.
Why not use a 50% offset on 18x18 tile?
At 18 inches, a full half-lap offset increases the risk of visible lippage if the tile has any slight warp, so the industry-recommended maximum for this size is closer to 1/3.
Is running bond a common choice for 18x18 tile?
It's less common than the standard straight grid, but is sometimes chosen for larger floors to add subtle texture without moving to a smaller, busier tile size.
How much waste should I allow for an 18x18 running bond floor?
A standard 10% waste allowance applies, similar to a stack bond layout — offset itself does not significantly change material needs.
