I keep a tube of clear silicone in my tool box and use it all the time. My trailer has hung side walls supported by moldings. The moldings were caulked at the factory with silicone. Whenever a screw comes out it is backed up by a dab of silicone when replaced. When things lift and need to be glued down out comes the silicone. Maiden voyage in our trailer we discovered the shower had not been caulked, out comes the silicone. When a caulk line needs to be replaced I slice the old silicone off with a razor blade, wipe it with a solvent and reapply.
