Bro this is it, copper roof saved that house from the dew. What I found in a website:

“but what practical benefits will it have as a roof? That is a great question. The benefits of a copper roof are pretty simple. The first benefit is that copper is lightweight, but at the same time, it is very strong. Copper also does a great job repelling fire, hail, and lighting. Copper roofs also do a fantastic job of preventing the growth of mold and mildew, not just because the metal has properties that repel but also because copper roofing has fewer failure points then traditional roofing materials have that end up leading to the growth of mold and mildew.”

https://www.vrroofing.com/what-you-need-to-know-about-copper-roofing/