Final answer:
Inspectors examining mortar-adhered tiles should look for even tile spacing, solid adhesion, and intact grout lines. Historical mosaic inspections further require assessing the condition of substrate and restoration materials while respecting original designs.
Step-by-step explanation:
When inspecting tile adhered with mortar, inspectors should look for signs of proper adhesion, such as even spacing between tiles, lack of hollow sounds that indicate poor adhesion, absence of cracks or chips in the tiles, and a uniform grout line with no signs of crumbing or discoloration. In the context of historical mosaics, as found in ancient sites or mosques, proper restoration and inspection are crucial to ensure the longevity and preservation of the artwork.
Given that mosaics were susceptible to issues such as the decay of wooden frames or the disintegration of the bitumen acting as glue, modern-day inspections should also consider the condition of the substrate and any restoration materials used. The historical value and the original methods employed in creating such mosaics must be respected to ensure that any restoration efforts maintain the integrity of the original design.