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The original flooring installer used the 6 mil vapor barrier. I hear you mention that in the video. I was planning to use the quiet walk that you suggested since my LVP is greater than 5mm and put it right over the top of the plastic vapor barrier that they laid. I have some minor concrete imperfections, and I thought the quiet walk may help a bit with that.
What are your thoughts on that?
Do you think it would be a good idea to use QW in my case?