Q: I have installed a Walker Zanger crackle tile which the entire surface of the tile is covered in the white material that the tile is made from. It is a shower stall. I’m guessing the water has penetrated the tile and reacted to it. What are your thoughts?
A: Hello Mike,
A crackle glaze tile requires sealing prior to grouting and then the grout must be sealed after it is fully cured (to be safe) after 72 hours. Then, depending on the amount of usage the shower gets, the tiles must be resealed as part of the routine maintenance program. For a master bathroom shower you may need to reseal every year where as a guest bath shower may be every 3-5 years. The white buildup on the tile’s surface is most likely not particles from the tile’s clay body but it may be grout residue or efflorescence emanating from the thin-set and mortar bed. Hope this helped and thanks for your question!