My wife and I are working on our daughter TT. She has fiberglass, and let me tell you none of them are the easiest things to work on, especially the fiber ones. I you have delamination problems, you should strip it down to the bare bones. It goes back together the same way it comes off. Make sure you check seams on a regular basis for cracks. I guarantee if there is a hole, the water will find it.W have been working on it over a month now, and we are finally putting it back together with a few much better modifications.