Bathtub Installation Is Rarely About the Tub
What it was hiding usually is — the wall, the drain and overflow, and the subfloor underneath. And there is one number in the research that should shape any decision about a bathroom.
Quick answer
Most bathroom injuries happen while bathing or getting out of a tub rather than getting in — CDC puts it at 37.3 percent against 2.2 percent. That is the real argument for changing one, and what sits behind the tub decides what it costs.
Source: CDC, MMWR: Nonfatal Bathroom Injuries Among Persons Aged ≥15 Years, United States, 2008.
The number
CDC counted an estimated 234,094 nonfatal bathroom injuries among people aged 15 and over in US emergency departments, 68.3% of them in the tub or shower. The exit is where the risk is, which is not where people put the handrail.
Source: CDC, MMWR: Nonfatal Bathroom Injuries Among Persons Aged ≥15 Years, United States, 2008.
Replace it or refinish it
Refinishing is a coating on the tub you have. It addresses how the fixture looks and nothing behind it. Whether that is enough turns on one question: is the complaint about how it looks or how it behaves?
What is behind it
The wall, the drain and overflow assembly, and the subfloor. All three are exposed when a tub comes out, and the subfloor is the one nobody budgets for — because nobody can price it until the old fixture is out.
A failed overflow gasket runs water down the outside of the tub into the floor and never drips where you can see it. It is the commonest hidden leak in a bathroom.
And the dimensions, if you are changing anything
The ADA standards give exact heights, diameters and clearances for grab bars at bathtubs. They govern facilities covered by the ADA rather than private homes, so in a house they are a reference rather than a requirement — and a better one than guessing.
Source: US Access Board, ADA Standards, Chapter 6: Bathing Rooms.
Where we publish
We publish a page for each of the 38 states we route in, built on the Census count of housing units lacking complete plumbing facilities. There are no town pages, and the reason is a measurement.
Changing a tub is mostly about what is behind it.Tell us what you want done and we will route you to a contractor in your area, found from your ZIP code, who can look at the wall and the floor before quoting. No charge to you, and we will not ask you why. Anything else needing a plumber is fine to bring up while we have you.
Call (888) 764-3080