Okay so normally when I re-caulk a tub enclosure it’s a tiled enclosure, and 80% of the job is chipping out the old grout or caulk or whatever, but in this case it was a fiberglass tub enclosure. And of course, the installer had taken the easy way out and had used cheap water based caulk, which, as sure as night follows day, allows water to get in and then mold to grow. The stains were horrific. No amount of scrubbing would get them out, they were embedded. ICK!
But, since it was fiberglass and not tile, thus cheap latex caulk and not old cracked grout, all I had to do was take a razor blade and cut out on the bottom and the side and the old caulk bead came right off. Normally, with a tile/grout enclosure, that takes a couple of hours to do and is just nasty hard work.
So I taped it up and did a bead of Silicone II and shaped it with my finger, and now it looks glorious. Well, as glorious as fiberglass can look.