Originally Posted by jrs
I think the Newmars are better insulated. I agree you should spend time watching their videos on the Newmar website.
I did a search of several manufacturers websites and found that the wall thickness between most coaches is virtually the same if you take the outside dimensions and subtract the inside dimension. I suspect the roof thickness is also similar.
While some use bat insulation others use various types of ridge foam. Practically some should be better than others but basically they are all about the same when it comes to R factor.