All glossary terms
Pattern & Repeat

What is Block repeat?

Also known as: Straight repeat, Square repeat

A repeat structure where every tile is identical and aligned in a perfect grid. The simplest seamless pattern type — left edge meets right edge, top meets bottom, with no offset between adjacent tiles.

In detail

Block repeat is the most basic of the three primary textile repeat types. It places every copy of the tile in identical alignment, producing a strict rectangular grid across the fabric. The mathematical adjacency constraint is that the top edge must equal the bottom edge and the left edge must equal the right edge — the same equality on both axes. This makes block repeats the cheapest to design (only four edge constraints to satisfy), the cheapest to print (no offset registration), and the easiest to color-match. The drawback is visual: at large scales the eye picks up the grid alignment and the pattern can look mechanical. Block repeat is dominant in geometric prints, pin-stripes, dot patterns, small-scale ditsy florals, and any design where the grid rhythm is intentional.

Example

A polka dot pattern where every dot sits at a regular grid intersection and every column has dots at the same height as its neighbor. When tiled, the dots line up perfectly across the entire fabric panel.

Related terms

Half-drop repeat
A repeat structure where alternating columns are offset vertically by exactly 50% of the tile height. Produces a diagonal flow that the eye reads as more organic than a block repeat.
Half-brick repeat
A repeat structure where alternating rows are offset horizontally by exactly 50% of the tile width. Creates the visual rhythm of brick walls and is common in architectural and tile-inspired prints.
Mirror repeat
A repeat structure where the tile is flipped horizontally and vertically and butted against the original to form a 2W × 2H quad-mirror unit. Mathematically guaranteed seamless without AI inpainting.
Rapport
The repeat unit in textile design — the smallest tile that, when repeated, produces the full pattern. Synonymous with 'tile' in seamless-pattern terminology.

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