In most cases, 2-in. screws are long enough. How to Install Grab Bars When You Can't Anchor to a Stud If you simply can't anchor the shower bar to a stud, you have a few options. The best ...

In the tub/shower, choose an adjustable-height showerhead so the showerhead can easily be positioned at a comfortable height for anyone. Use only anti-scald or pressure balancing valves.