Yes, the roof is #1 on the priority. Then, work your way down and check for any internal water damage, which can lead to mole and rotted out wood. While there, check for rodent droppings and other critters making a home in your rig. Check all plumbing hardware and pipes for leakage and cracks. Also, suspension hardware should also be looked at, including axles, tires, shackles, bushings, springs.
U.S. Air Force (1979 to 1994)
2016 Jayco 29.5BHDS
2015 Ram 2500 (w/Cummins Diesel)