I expect you're right. The Hymer Aktiv is being made in the same plant as other Roadtrek products if that tells you anything. I'd hate to get flamed relying on my bad memory, but during the tour, I believe they claimed R7 in the walls and better than that in the ceiling. I realize for house construction, that isn't great, but for an RV it didn't sound too bad. The units I saw in construction had spray foam on the walls, and I understand they add additional insulation.
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