Big crack in the my bathroom shower's grout
Hello,
I noticed a small crack in the corner where the two walls of the tiles meet, and thought it would be good to seal these cracks up with a silicone sealant. I initially thought this material was caulk, but now I'm not too sure, as it feels like it was part of the original grout used to attach the tiles to the wall.
http://i254.photobucket.com/albums/h...c/HPIM1330.jpg
I was told by a rep at home-depot that all existing caulk must be removed before I can apply my silicone sealant. I proceeded to chisel at the corner grout, and now I have a 1/2'' gap at the corner!
http://i254.photobucket.com/albums/h...c/HPIM1371.jpg
Is there some sort of material I can use to fill this gap? I still want to be able to apply my silicone protectant over it.
http://i254.photobucket.com/albums/h...c/HPIM1374.jpg
Thanks for any help.