rbest23 wrote:
Nice TT dogtown!! Have fun with the rebuild. We just purchased a 73 Holiday Rambler. Took everything out of it and discovered some mold and softness in the floor around the bathroom/shower area and will have to pull up the floor. Has anyone reading this post tried to replace a sandwich type floor (2 sheets of plywood with foam in the middle)? If so, what material did you use or is there a company that sells this stuff. Thanks
In a late model trailer that type of floor would be called a "composite" panel. I don't know if that type of panel was readily available to Holiday in '73, I'm doubting it was.
Irregardless, a fix is easy to do, just match the dimensions of the three components (bottom sheeting, foam, top sheeting) and install. A fastidious person would glue all three with a foam tolerant adhesive.
If I was doing this for my own use and the repair area was small, I might opt to replace the damaged section with stacked plywood, forgoing the insulation value of the foam. By using stacked plywood instead of the inner foam, it increases the rigidity quite a bit. Jayco was using this type of composite panel in some of their models and some uses have reported failures, especially in those areas that have heavy traffic.