Originally Posted by NO3putt
Are you sure it's not a squirrel or something running on the roof? Other than that have no idea.
Agree with NO3putt..... There is nothing in the ceiling except air conditioning ducts. The vents of course are up there, but they are simply a vertical channel running between all three layers.
There is almost nothing in the roof between the part you see from the inside of the coach (the ceiling) and the outer sheeting on top (fiberglass) but Styrofoam. The roof is built as a three layer "sandwich" completely assembled and THEN lifted up onto the top of the coach, all in once piece.
A mouse would have to either be in the AC ducts or in the Styrofoam itself.
That's my opinion after seeing how the coaches are built in Elkhart. Obviously I COULD be wrong.