[JRTJH]

Check the rubber roof. Pay very close attention to all the DICOR sealant around every "hole" in the roof and especially along the drip moldings at the sides and front/back. If there's any question, clean the area, remove any "LOOSE" sealant and apply a generous coating of self leveling DICOR to flat surfaces and/or lap sealant (doesn't run) DICOR to vertical surfaces. Then check the windows, door seals, all the appliance mountings.

Make sure to double check the aluminum molding that runs along the lower edge of the RV, just above the "color change" from the skirting to the fiberglass walls.

Check and clean the appliance gas fittings, furnace vents and make sure the refrigerator drain hose is in good condition and routed outside the refrigerator outside panel.

There are bunches more, but these are the basic "keep it healthy" parts.