How (why?) do ceramic tiles get "dislodged" from the concrete flooring even when they are adhered by cement?
The way we can tell is either, the tiles "pop" up and crack, and by knuckling to hear the hollow.
Answers:
if it sounds hollow under the tiles there is not enough thinset to adhere the tiles to the floor. easy way to tell is when they pop where is the thinset adhered to. if its the floor then there is not enough thinset. if its adhered to the tile the the floor may have an issue.
Other answers:
Tiles can pop due to bad installation and they can also pop due to prolonged moisture that has seeped under the tiles. The best thing to do is to rip it out and start over and do it right or have it done right.
Tiles can pop due to bad installation and they can also pop due to prolonged moisture that has seeped under the tiles. The best thing to do is to rip it out and start over and do it right or have it done right.
Roughen the area where you want to reinstall the tile. Use sand paper or some other type of tool to put small grooves. Make sure there is no dirt or dust catching. Give the tile proper time to seal. Most people walk on it too soon.