One-inch square mosaic chips — the classic pool waterline and interior format, and the easiest to run over curves.
Choose 1x1 when the surface is not flat: rounded spa walls, curved steps, tanning ledges, swim-outs and fully tiled pools. The small chip follows a radius with almost no cutting, which saves labour and avoids the broken lines you get when a larger tile is forced around a curve. It is also the format most people picture when they picture a mosaic pool. Frost proof, saltwater safe, $4.99 samples.