We have the reflectix backed pillows that go into the ceiling vents to keep the heat out. Do you store you RV with the pillows still in place when storage is outside in full sun? Would there be too ...
We have three vents, just put one up front. I have pillows in the front and back but the bathroom vent stays open all the time. It also has the cover the other two don't. I like the Reflectix idea I'll do that before our next trip.