Split-face tiles are manufactured from natural stone materials that are cut into small strips and assembled into moulds using adhesive. Due to the irregular shapes and heavily textured surfaces of natural stone, this bonding process is carried out manually.
If too little adhesive is applied, individual stone pieces may become loose or detach during handling or transport. For this reason, manufacturers generally apply slightly more adhesive to ensure that the tiles remain structurally stable.
As a result, a small amount of visible adhesive may occasionally appear on the surface of some tiles. This is a normal and widely accepted characteristic of split-face tile products.
From practical industry experience, applying slightly more adhesive is the more reliable approach to prevent dislodgement. Attempting to achieve a completely glue-free appearance would require discarding a significant number of otherwise usable tiles, which is neither practical nor sustainable in large-scale stone production.
Once the tiles are installed on a wall surface, any minor adhesive residue is typically barely noticeable from a normal viewing distance unless examined very closely.
Accepted Industry Practice
Split-face tiles are designed to create a natural, rugged stone appearance across large wall surfaces. They are not intended to be evaluated using art-grade or decorative craft standards.
Small variations in stone texture, natural colour differences, and minor traces of adhesive are considered normal within the split-face tile industry and should be understood as part of the authentic natural stone character of the product.