When inspecting tile adhered with mortar, what should inspectors look for?

When inspecting tile adhered with mortar, one of the key factors to consider is failed bonding. This refers to the adhesion strength between the tile and the substrate. Inspectors should check for signs that the tiles may not be securely adhered, which could lead to issues such as cracking, loosening, or even complete detachment of the tiles.

Failed bonding can often be identified through various indicators, such as hollow sounds when tapping on the tiles, visible gaps or lifting at the edges, and the presence of moisture behind the tiles if there has been a failure. Proper adhesion is crucial for the durability and longevity of the tiled surface. If the bond fails, it compromises the integrity and appearance of the installation, leading to potential costly repairs.

While surface discoloration, structural cracks, and excessive weight can be important considerations in a tile inspection, they generally serve as symptoms or consequences of failed bonding rather than the primary focus. Inspectors primarily look for bonding issues as they represent the fundamental integrity of the tile installation.