Should I seal my tiles?

Whether you need to seal your tiles depends on the type of tiles you have installed. Natural stone tiles like marble, granite, travertine, and terrazzo, as well as porous man-made materials such as terracotta and concrete, typically require sealing to prevent staining and damage. On the other hand, most porcelain and ceramic tiles usually do not need sealing. Additionally, glazed tiles are already protected by their glaze, which acts as a natural sealant.