Newmar glues foam and then adds another interior panel of batten insulation. Watch some of these build short videos including the sidewall one.
http://www.newmarcorp.com/why-newmar...-construction/
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Full-timed for 16 Years . . .
Traveled 8 yr in a 2004 Newmar Dutch Star 40' Diesel
& 8 yr in a 33' Travel Supreme 5th wheel
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