We had a structurally sound tub with solid tile (gray as it may be), and modern (new in the last 20 years) plumbing. We decided instead of going with a full bathroom tile re-spray for $1,700...we'd go with two cans of XIM "Tile Doc" epoxy tub spray, and a few hours of quasi-painstaking work.
The first step was to scrape all the old finish with a razor scraper to get off all the old, loose "re-finish." There was more than one "handyman" at work in this house previously!
Then I had to mask off everything I didn't want to "re-finish." This included the shower/tub walls, as well as the fill spout, etc. (Notice the nasty, old remnants of the 1970's peel & stick vinyl tiles??)
There is an un-photographed step between old and new...which wasn't very photgraphable. I cleaned the old bathtub thoroughly and etched the surface with XIM bathtub surface etching acid. This was a purple, mucky, time-consuming mess...but in the end hopefully an important step that will help the new finish bond well to the old!
Now was the moment of truth. I started going to town with the spray can of "new" bathtub-in-a-can. Much to my satisfaction...it came out pretty well!!!
Maybe hard to tell from the pictures...and sorry I don't have more, but our "new" old bathtub is now shiny and new!!! Hello clean feeling after taking a shower! :) YAY!!!