There's a fiberglass shower stall in my bathroom. It consists of two wall panels and one pan, and there seems to be glue/caulk in the seams between them, as shown in the photos.
I wonder if I can recaulk them with silicone. If yes, shall I remove the old glue/caulk before caulking? This is not easy since the glue/caulk is inside the seams. Moreover, is there any requirement on the type of silicone I shall apply?
I don't have the installation instructions or make/model of this shower stall kit, thus cannot find any useful information.