The delamination occurs on the stick built RV's that have a sheet of fiberglass attached to the inner core. Moisture can get between them from roof leaks
, and then temperature changes can cause the delamination.
Not a problem with our molded fiberglass campers.
Dave (AKA John) and Marilyn
04 Dodge Dakota V-8, 17 Dodge Durango V-6, 19 Ford Ranger 2.3 Ecoboost