Wine Cellar Construction My Question Is About Vapour Barriers In Wine Cellars. I Am Building Essentially A New Basement Cellar?

My question is about vapour barriers in wine cellars. I am building essentially a new basement cellar? - wine cellar construction

The basement is a concrete box (4x3.5x2.4 meters) underground. Do you have a vapor barrier in the box or inside? The weather here (Singapore) in the nineties, the humidity is 85% + range. The recommendations contained in the thickness of the walls, insulation and vapor barrier? This is a new development, I would get it right!

Regards,

Midas