Breathable membrane / Discussions

After having a metal roof installed over a open porch that was built now i have occasional moisture forming under panels that drips underneath. I now know there should have been a barrier installed but I was not sure about finishing ceiling off, so my question would be, is there any type of condensation spray that woul...

...membrane (See our pages on Radon barriers in basements for more information). Then we would add rigid insulation panels, a stud wall with batts, and drywall with latex paint. But - the assembly you mention would work, however, we wouldn’t include the smart membrane in that case. The predominant source of humidity would...