[wiredgeorge]

If it doesn't rain nothing needs to be done on your weekend trip; I would cover the area with a garbage bag and some duct tape if there is a chance of rain. Then stop at an RV supply place and buy some Dicor self leveling (that issue is on the roof?). Use a plastic putty knife and remove any loose old Dicor (that is what it is) and recoat the area with new self leveling Dicor. If I am off base and the problem is on the side of the trailer, use NON SELF LEVELING Dicor else it will run when it gets warm and make a mess. Don't use a substitute especially silicon or caulk. They won't make it down the road or there will be adherence issues.