Once the demolition started I couldn't stop until she was completely naked. As more skin was remove I could see how extensive the rot was around the edges of the trailer. I think the belly pan captured moisture and created the rot along the edges of the framework and floor. The edge of the soundproofing underlayment was black with rot, as well as the bottom, front, and back edges of the framework. I was pleasantly surprised that most of the side framework would be reusable. The curbing is made of strips of 1/4" plywood glued and nailed together over the curves and 1 1/2" X 1 1/2" boards for the rest of the frame work. We ripped 2" X 4"s down to use as replacement framework. Some of the photos are of the rot found in the perimeter of the wooden framework. The curb side was more affected than the street side because of the fridge vents. This trailer was built with with the paneling layered over the 1.5" curbing and under 3/4" curbing with the (ribs) nailed into the 1.5" curbing. I plan on following Larry's (Mobiltec) method of going to the outside edge with the (ribs) and filling in between with the curbing to give the skin a more solid base to staple/screw into.I was pleasantly surprised that most of the side framework would be reusable.