I have a problem with the roof on my 20' gulfstream. We had a very large rain storm (3 plus inches). I noticed the roof has some spots that are leaking. There is one vent that is leaking and a skylight in the bathroom. I took the interior trim rings off to access the area. The vent is not that bad but the skylight has some wood that is black and some of the insulation is wet. The roof (rubber) itself is in good shape. Not sure how to proceed in fixing this as the insulation is wet. I am hoping it is just in that location with the insulation as there is enough room for me to reach through. Could it be as simple as sealing them on the outside? Also, what is the stuff they use from the factory for around the vents and skylights? Any help?