RV Repair: Water leak repairs, mold and mildew, cotton swab

Question
Hello
I recently purchased a 30ft Gulfstream Innsbrook. It was very cold when purchased and no visible signs of water leaks. It recently thawed a bit and I have found two wet spots. I plan to repair myself. Can you give me suggestions,any how to pictures etc. Any help would be greatly appreciated.
Thanks Jennifer

Answer
Finding leaks is probably the hardest thing to do on RV's but with careful inspection it doesnt have to be that diffilcult. Leaks can walk down inside walls or run along frames and appear in a completely different area as well as taking a long time to show as a wet spot and you could waste a lot of time trying to repair areas that are fine. first take a look at the exterior and check for any areas that look as though water could get in, when you find a suspect area check for rust on screws or discoloration of the area. Common areas are corners, edge trim and external openings such as vents, windows and doors. Once you find an area you can check it by using a cotton swab or a toothpick. If you find a black residue inside the suspect area and there is no standing water, it is most likely leaking. If the unit is a pre-owned you will also want to check all the sealing along the trim and edges for dried out or missing sealant or caulk. You can also remove paneling inside and look at the wall, you will usually see a pattern that will lead you to the leak such as mold and mildew or staining. Let me know if this helps.