It's hard to beat the ordinary Latex artist paint (the stuff that comes in little tubes) for good sticking qualities and durability. Similar compositions are available in automotive and "house" paints, but for painting large surfaces a low cost per square foot is needed, obtained by a method technically known as "dilution." The art shop stuff comes in little tubes that even a poor struggling artist can finance, with enough pure paint (no dilution and no extenders) for most works. I've used the art shop latex to put address numbers on a number of mailboxes (metal and plastic ones) and there was no noticeable peeling, discoloring, or fading over 12 to 15 years. LiK used the same stuff to "decorate" our camper (plastic sided) rather lavishly with "cartoon characters," and except for a little bit of gravel erosion on one they all looked quite prime after 14 years of rather careless use. John
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