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Boat House
Painting the underside of your aluminum decks
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<blockquote data-quote="Johnny" data-source="post: 428618" data-attributes="member: 13599"><p>the paint college I went to a long long time ago discussed this very topic.</p><p>primers have ingredients in them such as acids, salts and inert material</p><p>that actually <em>attract</em> moisture. that is why you see so many rusty</p><p>repairs on vehicles with primer gone bad - the general perception</p><p>is that we think the primer will protect bare metal until it is painted - but it won't.</p><p>primers are designed to make a physical bond between the metal</p><p>and the top coat - the top coat is what provides the protection - not the primer.</p><p>there are some exceptions to the rule - such as industrial primers that contain sealers.</p><p>[ATTACH=full]89967[/ATTACH]</p><p>so - in my personal opinion, if you want to prevent oxidation - prime AND paint.</p><p></p><p></p><p></p><p></p><p>.</p></blockquote><p></p>
[QUOTE="Johnny, post: 428618, member: 13599"] the paint college I went to a long long time ago discussed this very topic. primers have ingredients in them such as acids, salts and inert material that actually [i]attract[/i] moisture. that is why you see so many rusty repairs on vehicles with primer gone bad - the general perception is that we think the primer will protect bare metal until it is painted - but it won't. primers are designed to make a physical bond between the metal and the top coat - the top coat is what provides the protection - not the primer. there are some exceptions to the rule - such as industrial primers that contain sealers. [ATTACH type="full" alt="Bad Primer.jpg"]89967._xfImport[/ATTACH] so - in my personal opinion, if you want to prevent oxidation - prime AND paint. . [/QUOTE]
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Painting the underside of your aluminum decks
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