I had my kitchen replaced about a year ago, and some of the floor tiles are starting to make a knocking sounds when I walk on them. They seem to be the ones I walk on the most.
The company that did the work said they will come and look, but they find this very unusual, and the problem is likely to be some other issue, such as water damage.
I find this hard to believe as there is no water source near this area. I was wondering if people had any tips on what the issue is likely to be so that I can be prepared for the conversation.