I would have this looked at as suggested above...we had something similar though leaking at the bottom versus the top. I found out when black mold appeared through the wallpaper. Service, at my cost, fixed the issue.
Cats ... on our property we actually leave the hood open on our truck in the barn so the cats keep creepy crawlers from chewing on the wires! I'm not a cat person, but having them on the property (not in the house) works wonders.
Just completed a Texas to California trip over two weeks ... The rest stops and "truck stops" were all packed by truckers on I-40 and I-10. Very little room to pull an RV into for a quick nap. Moisheh - when you are working; feel free to put money ...