issue with seam on roof
I have a Rockwood 8313ss. I have posted on here issues I have had with water leaking into the bathroom sky light and some other leak issues. Last evening I was finally able to get up on the roof to evaluate the situation. I discovered that the material that is supposed to seal the seam where the rear cap meets the roof is disintigrating! The material is obviously worn away and appears to be sticking to the roof behind the seam. There are no actual gaps, but in places there is not much protection. I will post pictures later. By contrast, the seam in the front appears to be in perfect condition.
I have some questions. First, what is the sealant material called that seals those seams? It is some type of thick putty or caulking that has skinned over. It is pliable to the touch and gray in color. Second, is this type of wear typical? Last, I have seen other posts about Eternabond being a good product for sealing these seams. Do I leave the existing material on the seams, or do I need to remove it before applying the Eternabond?