Lot more interesting detail can be read here. In respect to this, does a bath have to be level?
Fit and level the bath It must be level in both planes. To achieve this, pick one leg and use this as a dating point. Level this leg with its opposite, then level these two with the remaining legs. By tightening or loosening the threads on the bath's feet you can make the necessary adjustments.
Also, why does my bathtub squeak? Squeaking in an acrylic tub when weight is placed on the floor of the tub can be due to the tub flexing or bending. Injecting a low expansion foam filler to fill in gaps between the floor of the acrylic tub and the subfloor of the bathroom can help eliminate this flexing and reduce the likelihood of damage.
Keeping this in view, how do you level a subfloor for a bathtub?
Put a layer of plastic on the floor, mix up some deck mud (you can often buy it preproportioned, just add the appropriate amount of water), lay it in piles, then set the tub down. Use a level and smush it in place until level, then let it sit, preferably overnight.
How do you secure a bathtub?
Once the tub is level you can attach it to the studs using 2 inch galvanized screws. Place your foot on the inside edge of the tub to hold it steady while securing one screw in the center of the tub on the main wall. Check the tub is level again on the main wall then transfer your level to the front of the tub.
