My dad told me to use a 6 mil vapor barrier in that basement job, and I'm glad I listened
He said the concrete floor felt dry, but it would still sweat over time. I almost skipped it to save a few hours on the schedule. Sure enough, after we glued down the vinyl plank, a huge rainstorm hit. When I went back a week later to check, the floor was perfect with no moisture issues at all. Has anyone else had a client push back on vapor barriers and how do you explain it?