A person called me on the phone with the following problem:
They have moisture inside the wall of their home.
Here is how it is built…
Plywood next (on the outside of the studs)
Black thick plastic next (under plywood)
Insulation between studs (no paper backing on insualtion)
Sheetrock on the inside of studs.
The moisture problem is between the plastic and the plywood but
some is getting inside the lower part of the insulation.
The wall faces south and they live in Houston Texas (humid area).
What is the cause, and what is the remedy?
Who should they call for advise and repair?
I have some ideas, but I would value your feedback
if you have any input on this problem.