Shower floor sinking
I have a one-piece shower stall, fiberglass I believe. We found a leak/crack in the floor and have caulked/sealed it - seems to be ok for now. The house is ten years old (we bought it 2 years ago). It seems as though they did a poor job of supporting the floor in this thing...it is squishy when walking in it. On top of that, the slow leak probably caused some rot in the wood beneath...my question is: Is there a way I can fix this without ripping out the whole shower unit and probably paying someone a ton? At front of the shower (under the door) the fiberglass goes all the way to the floor - so I cant "sneak" underneath.