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Old 04-20-2018, 08:47 AM
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painting galvanized metal

Scored a swamp cooler that needs a little TLC. It's galvanized metal that needs a fresh coat of paint. Question is, how do I get paint to stick to it?
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Old 04-20-2018, 10:27 AM
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First a good scrubbing is mandatory.. The green scrubbies your wife uses for dishes and Dawn with hot water.. hot as you can stand will work to get the surface clean. once it is clean there are a number of galvanized primers that can be used. once the prime is done then a color of your choice is used.. Some say sand it which might work but I want it as clean as possible before any sanding..

I have tried most all of it and now do what is known to work..
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Old 04-21-2018, 05:49 AM
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Swamp cooler

After cleaning and scrubbing, I've always wiped the surfaces down with vinegar. Perhaps old school by now.
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Old 04-22-2018, 05:08 AM
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I've done the vinegar trick also. It works.
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Old 04-22-2018, 09:18 AM
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And epoxy primer is a good way to go too.

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Old 05-02-2018, 11:14 PM
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I don't really paint galvanized metal but thru training I recall reading that you use etch primer OR use white vinegar then rinse with water with a little baking soda and then prime with a DTM primer.
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