04-07-2008, 04:28 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 5,307
Thanks: 0
Thanked 148 Times in 143 Posts
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regular ol aluminum siding? bare metal? you can try vinegar on it. this will dull the finish. muriatic acid may do the trick. you got to find something that will oxidize the surface. aluminum naturally ages forming an oxide that protects it.
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