Aluminum over foam ???
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Seems like a good idea ... We know it's difficult over wood (float required) But the question is , does foam and aluminum expand and contract in a similar compatible manner ... ??? Thinking about siding ... vinyl and aluminum siding expand and contract very much alike ... Although I've never seen any , some have reported panels like this available commercially , and the RV tech who befriended me even mentioned fabricating some TD s with this material combination ... ![Thinking :thinking:](./images/smilies/econ_thinking.gif)
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