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Old 11-02-2005, 09:54 AM   #1
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The 1977 dodge commander we are beginning to restore has small, tiny really, holes in various places on the skin. Causes? Repair ideas? Thought of using some sort of aluminum filler for the time being.
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Old 11-02-2005, 09:54 AM   #2
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The 1977 dodge commander we are beginning to restore has small, tiny really, holes in various places on the skin. Causes? Repair ideas? Thought of using some sort of aluminum filler for the time being.
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Old 11-02-2005, 11:54 AM   #3
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If the skin is alluminum they are probably electrolysis corrosion holes. This happens sometimes from power sources that are wired incorrectly and causes crazy current paths. This will happen on boats moored next to one another where one is wired or connected to shore power improperly..
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Old 11-02-2005, 07:21 PM   #4
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Hmmmmm. Thanks for the quick reply! Guess we'll add wiring to the things to check out! We had figured on looking it over, but we'll be extra thorough now!!
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Old 11-24-2005, 05:48 PM   #5
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Some RV's that were made with the thermo panel type walls had a problem with the glue that they used to stick the layers together. The glue reacted with the aluminum skin and made little pin holes. One very famous brand of RV had a big problem with this in the 70's !
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Old 11-28-2005, 08:15 AM   #6
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Okay, I'm a newbie. What's a "thermo panel"? Thanks for your input!!!
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Old 11-28-2005, 03:17 PM   #7
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They glued layers of paneling, styrofoam, then the outside metal skin. This was made in big sheets, and they used it for the walls, and ceiling. It was easy to cut the spaces for the windows, doors, fridge access, a/c, etc. The problem was, that the glue they used had a reaction to the aluminum, and it started to make pin holes. They used a different glue in later years. That is what I was told by my local RV place, when mine did it.
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Old 01-10-2006, 01:36 PM   #8
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Thanks for the info! Have decided to just fill in the holes, sand, and spot paint for now as we plan on gutting the thing in a few years and redoing it from the floor up. Right now it's just nice to have a motorhome that runs well and keeps us comfortable! Don't feel the need for a "new" rig as we go deep in the woods on forest roads and our rig gets dings and scratches from branches etc.
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Old 01-19-2006, 04:37 PM   #9
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What happens is that when the ions in water come in contact with the aluminum a microscopic battery is created and this is what creats the hole which eventually become larger. Now I am not an engineer and this is what i was told. I have this problem on my Barth Regal exterior cabinet doors.

Now if you repair the hole, don't use a bondo type product because there is iron in that. Use an epoxy filler and sand it flat. I did that with very good results.

This doesn't happen on new products because they treat both sides of the aluminum.
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Old 01-23-2006, 04:10 PM   #10
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Will do. No bondo product. I have an epoxy filler so when the weather clears, if it ever will, I'll be patching.
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Old 02-01-2006, 09:53 PM   #11
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Tree sap can create pinholes in aluminum also.
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