A short time after the project was completed, I noted water weeping from beneath the column clad boards which were not joined to their column bases and concluded that this was the result of condensation. (Note that we live in hot, humid Louisiana.) Upon this discovery, I caulked the ⅛ ˝ openings I’d left to prevent rot caused by contact. I’ve now concluded that was a mistake because, over time, the clad boards began to split and degrade.
My son and I dismantled one column today (08/02/14) and found that the whole lower portions of the core supports and clad boards had rotted away. There were no visible signs of water damage or flow above the rotted sections, so the roofing job does not appear to be at fault. Therefore, I’ve concluded that my condensation theory may be correct, and if so, I acted the role of dunderhead by sealing the bottoms of the columns.
To correct this problem I’ve decided to redo the columns much as I’d done before, but drill vent-holes at the tops of each column to prevent condensation.
Does anyone agree with this theory and its remedy?