How to tarnish a shinny tin building

Nov 07, 2007 20 Replies

Having just added on to a galvanized metal building, the new metal is a real contrast to the existing structure. Anyone know of an environmentally safe wash, that can be used to age the new galvanized metal for at least a little better match?



If not, any ideas on how to best prep the new and old metal for paint?


I thought of that too but wouldn't that leave it splotchy? I can't see how you could get if even.

..and then paint it quick or it will rust.

It's difficult to paint galvanised metal. Last time I tried it was like trying to paint a wax candle with water based paint. I tried to degrease it with different things but nothing worked.

Perhaps different things on some scraps...

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Says it must weather for 6 months before painting...
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Painting won't last. Use a deglosser on it and leave it alone.

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Thats what aging is all about. The appearance is never regular, and it does have rust spots etc. I did an art project for an artist, and we used old tin to build a barn.

painting...

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You can try salt water or hydrogen peroxide. If you are going to paint the galvanized metal it needs to be "etched" with a product that tin benders use to put on the metal before it gets painted. Vinegar might do the same thing. Experiment.

Thanks for ALL the suggestions guys. I really appreciate it.

I have picked up a couple of Klean Strip products, Tri-sodium Phosphate Substitute and Phosphoric Prep & Etch. I plan to experiment with these and vinegar, hydrogen peroxide, and salt water as well. If anyone thinks of anything else, let me know. I'll be back in a week or so to let you know how they worked.

Yogurt perhaps? Used for matching new and old roof tiles. Gets the bugs going..

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That's an unusual angle. Grow microbes!

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