Wood battens exposure to moisture

Norman Patti
10/22/2006
Miami-Dade County requires a 30 lb. moisture barrier on the wood sheathing of the roof, which I assume is to prevent any possible moisture from getting through. If there is moisture above the moisture barrier and below the metal tile panels that are attached to wood battens above the barrier which are not pressure treated, won't the wood battens begin to rot after they are exposed to that moisture? What is the long term experience with this potential problem?
Todd Miller
Classic Products, Inc.
10/24/2006
I have not seen any issues with this. There is a certain air permeability through these roof systems which prevents trapping moisture.
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