I just bought my first home and before moving in had a contractor take up the old laminate floors and install new engineered hardwood floors. There was a short turnaround of 4 days since I wanted it done before I moved in but he assured me it wasn't a problem. The floors were finished the night before I moved in and unfortunately it wasn't until I moved in that I noticed there were a lot of dips/sinking/bouncy throughout the whole home. I am not a floor expert but knew immediately they did not feel right or stable. I had to reiterate this to him many times and show him over and over what the problem was. At first he said that floating floors have movement and that it was normal. Then he said he could inject glue in the places that were the worst (some places sink as much as a half an inch). After reading ****** I found out that was not a good thing to do. He then finally admitted that his flooring guys had installed them wrong and not told him. He said he was mad at them and it was their fault and that they have done this before. He said I can just leave them as is and not pay him (I have not paid him a cent yet) or he said he can have them all ripped up and then order new floor that he will have to glue down to fix the problem. My question is, should they be glued down?? Isn't the real problem that his workers did not prep/level the subfloor? Should I even let him fix it or should I just not pay him and have someone else fix it? I'm worried that if I let him fix it, it will not be fixed right since I have had to show him so many times what was wrong and he has blamed his workers instead of taking responsibility. I plan on getting some second and maybe even third opinions but would love any input you guys have, too. I'm so stressed about this! Having floors ripped up while I'm living there is the exact thing I wanted to avoid but unfortunately it looks like the only option because of their shoddy work.