The ceramic tile is delaminating due to water exposure in the shower.
Ceramic tile delamination.
Depending on their severity and slab use such as exposure to wheel loads and heavy traffic these zones are likely to detach sooner than from a sound surface.
After all a clay plain tile roof at 60 tiles per m 2 laid at a broken bond and double lap is the one of the most expensive and complex systems a customer may choose for a roof.
The injectabond then reglues tiles at the point of delamination and provides a positive bond from substrate to tile.
It originates from the presence of trapped air during pressing and elastic recovery of the pressed material which prevents the consolidation of the pressed material.
Answer answer whether it is stone tile or ceramic tile or porcelain tile or glass tile if the tile becomes loose or unbonded then we refer to that either as a tile that debonded or we might say the tile has delaminated from its substrate.
As a general principle if spalling had occurred to tiles over 15 of the roof surface area then there has to be strong justification for complete renewal of the roof tiles.
The difference between concrete s rate of expansion and contraction and that of ceramic tile is about 10 to 1.
A concrete slab one hundred feet across can grow and contract over half an inch.
If the tile has lifted off of its substrate at some point of the tile installation but is still attached to the adjacent tiles by the grout joints then.
Avoiding delamination is a solid argument for choosing both high quality clay and manufacturing credentials when selecting a clay plain tile for the roof.
Delamination is a typical defect of ceramic tiles.
It only takes a fraction of that movement to cause a tile floor to delaminate.
Remedies for delamination if drummy sounding areas on a slab are easily detectable by hammer or chain dragging the subsurface probably contains voids.