Plastic Wrap

This doesn’t look like breathable vapor barrier but plain old plastic sheet. It also looks like a DIY by the owner. How can you tell the type of covering?

Conditioned space? Sealed soffit vents?

Non conditioned attic space, 1930s home. No roof venting or soffit vents

(I’m not a guest, InterNACHI member, sent message to office why it comes up as guest?)

Non conditioned, un-vented roof, 1920s