Not sure if there is any insulation for the Roof , except a head liner . The insulation on my Sanctuary is just some Fiberglass mat stuffed in the walls in sections . Not very well done , many gaps & in-between structural there is nothing , so yes , its should have better , but to do that you will have to disassemble most of the Interior of the RV.
I will be adding more at some point later this year when I have the time .Some photos below from behind the Bath rm. , notice how there is no insulation in the structure frame , just in open spots .
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