The shadow being mentioned here is not the decal, glue or a residue. The number actually is protecting the aluminum under it. What you see is the effect of the elements on the skin and the shadow is actually the oxidation around the numbers surface. Many East Coast trailers are exposed to high acids in the rain due to all the power plants and industry up wind of us. The rain etches the skin and you see the ghost numbers because the skin was protected by decal. If you get up close you can see this very easily. On my trailer, a previous owners numbers is the only area not etched by the rain. A cling type decal will make zero difference in protecting or harming you skin as opposed to a traditional decal. Cover the whole trailer with a decal and you might be on to something.
It is common for people with MoHo or new trailers to put the numbers on a sheet of something and display them through a window.
Welcome to WBCCI. We joined 4 years ago and have been on 5 caravans so far. I suggest trying one as soon as you are able. weekend rallies good, but for us the carvans are just great.
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