alum frame vs. styrofoam?
after talking with a dealer we have learned most new manufacturers are switching to a cheaper much less durable construction, not a metal frame but rather a Styrofoam like product, in walls floor AND ...
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My 35 ft National Dolphin Motorhome had very little framing. Even the windows weren't framed out. Sidewalls were laminated fiberglass skin over Mende board on the outside, foam in the middle and plywood on the inside. I was never thrilled about it, but it never gave me any problem(sidewalls that is).
