I have Bruce 9" x 9" parquet tiles circa 1965 throughout my condo. During my cat's final illness, he had many accidents on the carpet in my bedroom (the only carpeted room in my home). I was overzealous in cleaning the carpet (diluted vinegar) in my attempts to rid my room of that awful urine odor. The carpet had to be discarded and after it was lifted, it became apparant that about 26 tiles were badly damaged. Some of the floor was replaced with Mohawk unfinished parquet tiles and the entire floor was sanded, stained and polyurethaned. Problems developed when the parquet tiles were being laid as it is obvious that the person laying the tiles had never worked with the tar like adhesive that was used. He "overtared" the floor and a few days after the job was finished, tar began coming up between the seams of the tiles that were replaced ( a lot more than the 26 damaged ones had to be replaced, of course) and especially where filler was used. The floor looks unsightly in those areas, to say the least. The flooring contractor is not returning calls and my concern right now is fixing the floor. Prior to calling in new contractors, I would like to be more knowledgeable so that I will have a better understanding of how the floor can be fixed (if that is even possible). Otherwise, my only alternative would be to install an engineered wood floor since I have a concrete subfloor.

Years ago I saw the same thing with an unfinished herringbone (5/16" thickness)
There was something like eight square feet to finish and we ran out of the recommended "paper back" adhesive...creamy colored. We finished the small area with the older nasty smelling chlorinated black adhesive from the mid 90's. It didn't ooze right away, but after the floor was finished...a few days later. It's been so long and my only guess was the friction caused by the sanding heated it up?

What type of adhesive did Mohawk recommend?

I can't remember the name of the adhesive but it has been used before in my home. I had a flood back in Sept and my co-op (problem with plumbing that is the co-op's responsibility) had an outside contractor replace the damaged tiles with unfinished tiles (about a third of my living room) using the same adhesive and then all of my living room tiles were sanded, stained and polyurethaned as well as my foyer by the same contractor who worked on my bedroom floors. This work was done at my expense as my co-op would otherwise have replaced the floor with a very low-quality finished parquet that would not have matched my very large foyer which leads into my living room. I was very happy with the job and recommended the contractor to a friend and he did a great job refinishing her floors. This time, my flooring contractor did the entire job - laying the floor and refinishing. Honestly, I think his worker was unfamiliar with working with the tar-like adhesive. The contractor usually works with a different adhesive (he told me this after the tiles were laid) but I had left over tar-like adhesive and quite a few tiles left over from the living room work that I had stored away and the contractor remembered this and said he could use those. When his worker was done, the floor was convered in tar. In the interest of brevity, I left out that all the tiles the worker first installed were removed when the contractor saw the work because the floor had been oversanded and there were numerous spots where the top of the tile no longer showed the grain. I suspect this happened because the worker was trying to remove the tar that the top of the tiles were covered in? The tar underneath those tiles had to be removed (the new worker kept mumbling "too much tar") and new tiles laid (again, tiles I had left over and using the same black adhesive). The new tiles looked good for about a week. Sanding was done immediately so maybe the heat from sanding contributed to the problem but the excessive amount of tar used perhaps contributed to the problem. As I have said, the contractor is avoiding my calls and my main focus is how or if this can be fixed. More and more tar is starting to appear between tiles.