I have a 2000 30' with and island bed. There is no overhead bed as that space is used for an entertainment center. I have had this LD for 12 years now with no problems. The aluminum siding is painted with and aircraft grade paint. The roof is a one piece aluminum sheet. If the side seams and places where vents, AC, antenna are kept in good shape then no leaks. When folks see my LD they are amazed at how old it is. I wash and wax it on a regular basis. The interior is made with quality materials that are still in good shape. As stated before the resale value of these units are very strong.