16 gauge aluminum sheeting is really thin and soft. A lot thinner than 16 gauge steel. 0.0508 in aluminum compared to 0.0598 for steel. Any little bump or slip of a screwdriver/wrench would either gouge, dent or scratch it pretty easily. I've seen the undercover innovation ones and I wouldn't use it for anything other than a quick dress up for a really nasty firewall for a show or something. I can't see them lasting for daily use.
Silicone would probably hold it fine as it's very light.
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