Review on Efficiently Replace or Install Roof Vents, Side Mount Vents, Plumbing Stacks & Refrigerator Vents with Camco Universal Vent Installation Kit (25003) by Isaac Maze

There was moisture in our RV. It turned out there was a section of roof along the skin that needed caulking. I bought this material, cleaned the spot and taped it (it sticks really well so make sure you're willing to leave it where you put it). It has withstood the scorching desert sun, cold northern weather and a tornado alley storm across the US. Now I make sure we have something on hand in case we get a branch or need a quick touch up on some weathered areas of our roof. I would recommend this if you have an RV.