....if it is .060 aluminum it is pretty stiff stuff and if it is glued instead of screwed it will move some -but not alot....'specially in the sun.....some back it up with a layer of wood to minumize the stretch marks but I don't think much of that idea....still waves on hot days.....My trailer had waves from the pressure of the foam expanding-holding the insulation panels in place and to make an airtight seal.......still there after a year....not as important to me as the insualltion value in hot weather and cold weather.....geofkaye
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women-food-money-naps...not necessarly in that order
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