heres proof that a clear coated sign can last several years. This was a sign siliconed to a rock for the dog. The gold is actually "fake leaf" imitation gold clearcoated, the black was actually satin rust-o-leum, back in 03. I buffed it out this weekend because it does face straight up and gets all elements all year round. vinyl hasnt lifted nor has clearcoat peeled. the only damage has been from limbs falling on it.