Here's a list of things that would be helpful to know...
How old is the home? - Home was built in 1980
Since you said that you put new underlayment down..
Is it over a basement or a crawlspace? - Over a basement with humidity control (Mid level floor in a 2 story house)
If it's over a...
I was wondering if anyone has experience with with both Karndean K-99 pressure sensitive versus Karndean dry set adhesive. I had about 2000 square feet of Kardean Vangogh LVP flooring installed. The entire floor was installed on a new layer of sure ply with Karndean pressure sensitive...