I have a 15-year-old acrylic shower enclosure that was very generously sealed with a rubbery, probably at one time clear or white, silicone sealer. The sealer has turned orange and looks ghastly. It was heavily and sloppily applied. I've heard about chemicals for softening the silicone to ease the task of removal. Does anyone know if the silicone removers work? Will they damage the acrylic? I've also read about WD 40 or other maintenance sprays working very well...would they damage the acrylic? Has anyone had any success using nail polish remover? The seal seems to be fine so even if I could restore to clear or white, it would be a big improvement. Then again, I've read that cleaning it could undermine the integrity of the seal. Sure could use some input. Thanks.
I'm no expert but I've always used the tip of a hawk's-bill linoleum knife to start and then razor blades to physically remove the last of the silicone. I doubt there is a common solvent that would work on silicon but not eat acrylic. Nail polish is acetone, which I would expect would damage acrylic. I would fear that WD40 might interfere with re-caulking adhesion and might discolor the acrylic.
DAP makes a silicone remover gel ("silicone-be-gone") that says "won't harm most surfaces" but I would try calling DAP or testing on a hidden edge of your acrylic. I am skeptical.