I have a 120sq ft shed/building that insulation and drywall was added flush (instead of flat ceiling) to the ceiling to maximize height inside (please see pictures for hopefully good description). I had an issue with few drops of water under the lights pictured when I took them off. First, I thought the roof was leaking but after running a hose on the roof with no leak, the only other thing I'm thinking it could be is condensation.
Condensation forms when warm wet air meets a cold (below dew point) surface.
Empty unused building almost never have a problem with condensation.
Buildings used by people, who breath and sweat do.
How often is the building occupied? What is it used for?
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