We have finially strated putting on a new roof on the RV that has been sitting here all fall. The first thing we removed off the old RV roof was the air-conditionare unit. You do this by removing the cover on the top of the air-conditionare. Then you go inside and take off inside cover and remove 4 bolts. This unataches the unit from the camper. You then unplug the wires and the unit is ready to lift off the roof. However on this unit we did have trouble getting it off. There is a foam gasket that attaches to the air-unit between the unit and the roof. On this seal silicone calk was also used. This make it very difficult when we tried to push the unit through the roof. We had to use pry bars to help lossen the seal. Once we broke the seal loose we removed the air-unit. We then started takeing off the vents. Each vent was fastened to the deck with screws going through the metal on the vent into the wood deck. It was then caulked over to prevent leaks. These also gave us a little trouble because of the extra caulking used during installation. We have already found bad deck board that will need to be replaced on the rv roof. We removed the other vents without any problems. We are ready now to remover the metal strip on the front of the trailer. Thats hold the rubber down to the deck. Should have more info tomorrow.