Absolutely the norm with a new RV, although it shouldn't be normal. We picked up our new motorhome this summer. The first few trips and using the AC it looked like it was snowing inside (Styrofoam pebbles).
It gave a new meaning to "Christmas in July". It is beyond me why Thor just carves out the roof insulation instead of installing true air channels for the ducted AC system. My 2011 Itasca Reyo had real channels.
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