Tile Crazing on Glazed tiles

We make Fireplaces from 1920s Art Deco fireplaces and classic Edwardian fireplace and mantel designs.
Tile Crazing on Glazed tiles: Tiles are manufactured to BS 6431 and are not guaranteed against crazing. Whilst most tiles do not normally craze the thickness of glaze necessary to reproduce the very shiny Victorian colours may often cause this to occur. It does not affect serviceability and actually achieves a truer degree of reproduction effect.

This is slight cracking in the glaze is normal, and is usually caused by the small expansion of the tile body when wet. This is usually most apparent when the tiles are first laid, or after "slabbing". However it usually occurs to some degree with time. The commonest cause is expansion of the tile body due to moisture ingress, which produces these tensile cracks in the glaze. It does not affect the serviceability of the tile - the cracks are in the glaze only and not the body of the tile, and may lessen when the tile fully dries out . The thickness of the glaze necessary to reproduce the high gloss glazes also leads to increased likelihood of crazing, so crazing is very likely to occur in most of our glaze colours. The Ivory, Bassalt black, Stockwell grey, 942 and burgundy glaze colours are less likely to show crazing effects, due to the different nature of the glaze formulation.