I think the floor was not prepped correctly. The tub creaks a lot and there is a great deal of vertical play when standing and moving around.
The tub does appear to be level, so I don't think that's the problem.
It doesn't seem to be such an issue when it's full of water and I'm sitting down- I suppose the weight is more evenly distributed.
|w| o | |a| | ->|l| tub | |l|_____| |_______|
I was thinking of:
- Cutting a hole in the in the wall (where the little arrow is)
- Pouring some self-leveling cement into the frame underneath the tub
It's a fiberglass tub and there is not a big gap between the bottom of the tub and the floor, so I don't really know if much cement will flow underneath the way I want.
Would a different product work better for this? Maybe expanding foam? or something else?
I can't remove the tub because there is tile lapped over it in a way I can't remove without damaging everything.