So I have a problem. We have a shower where the walls are tile and the floor is your standard plastic flooring. It's probably 4 feet by 4 feet which means that the water runs right down the tile wall to the floor. This seems to cause problems as there is a constant flow of water directly on the tile running down the wall.
The plastic goes up about 5 inches at an angle similar to this
http://www.google.com/products/catalog?hl=en&q=shower+floor+4x4&ix=sea&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1333&bih=624&um=1&ie=UTF-8&tbm=shop&cid=17943432265883037112&sa=X&ei=CgG1T4TjF4iO6gGdw43XDw&ved=0CK0BEPICMAE and then meets the tile wall.
When we bought the place, they only had grout down there connecting the wall and the plastic and it was starting to wear down and even led to some very minor water issues getting down to our first floor. In my research, they said that there should be caulk designed for a shower there. I did that, and it worked well, but I probably could have been more diligent in cleaning and clearing the area before I applied it. After about a year, I had to re-caulk the whole thing. Now, it looks like I'll have to do it again as there is already an area where the caulk is coming off the wall. Any advice on what to do?
I think I have these options.
1) Regrout and grout sealer the area like it was previously and then watch for issues and just be diligent.
2) Get rid of all the grout(some was still there and I didn't remove it when I caulked but I covered over it with caulk) and then just caulk and deal with redoing it every 6 months to a year.
3) Grout, then put caulk over it.
4) Call someone who does this professionally and let them handle it.
5) Use Rebath and have it so the direct water is hitting plastic instead of the tile.