Lazy Daze overcab paint electrolysis bubbles, August 3, 2009
See those four bubbled areas in the paint?
They are right outside the corner where you see the water in this picture.
If you see a bubble in the paint there is moisture behind the skin.
I still can't believe it but so far it has proven 100 percent reliably true. There is moisture behind the skin causing the corrosive electrolytic action that's pushing the paint off. It was true below the refrigerator access panel where I found the major water damage to the framing. The converse is not necessarily true however: no bubbles - no leak. There are no bubbles outside the desk area.
Believe it and go find the source.
There is no obvious source of the moisture causing this electrolysis but today I started my sealing operations by around the window and after I test for leaks at the window I'll caulk the seam in the aluminum skin. I want to determine the source of the leak, not just caulk everything and never know what was actually leaking so I'm taking this one step at a time. It was a leak in the seam that caused me so much grief with the leak back under my desk. If caulking the seam doesn't do it there must be a leak around a loose screw or two. We'll see.
I wonder where the water is getting into the door...
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