Why do I see conflicting information on vapour barriers?
...insulation, laying down a polyethylene vapour barrier over the whole surface (it can go up and down over joists) then reinstalling the insulation.".
But in this article (https://www.ecohome.net/guides/2299/painting-on-your-vapour-barrier/), specifically in the comments section, ecoHome suggests that a vapour barrier is...