Need some help with applying silicone caulk to my front cap. The trailer was braught into the dealer to have the front wall replaced, but that's a whole different story. Anyways after washing and waxi...
Silicone will degrade quickly if left in the sun and weather. IT can't be overcoated, even with more silicone. Best procedure for the OP would be to remove the silicone that is on the trailer with a silicone removal product (I like 3M), clean the surface with a solvent, and reseal the areas with a urethane or polymer based sealant.