Removal path
The old tub has to come out in one piece or be broken up safely, and the new one has to come in. Doorways, stairs and condo elevators all matter.
Out with the old tub
Bathtub replacement means taking the existing tub out and fitting a new one in its place. It is the step to consider when a coating or a liner will not solve what is wrong with the tub you have.
For homeowners planning a tub, shower or bathing-area project at a home they own in an eligible ZIP code. Not for mobile homes, billing or customer-service questions, or small accessory-only jobs.

In short
Bathtub replacement removes your current tub and installs a new alcove, drop-in or freestanding model, usually in the same general location. It addresses tubs that are cracked, damaged underneath, badly worn or simply the wrong size or style. Because the old tub comes out, the walls, floor and drain behind it can be inspected and repaired too.
Options and layouts
Set between three walls with one finished side, this is the most common replacement in standard bathrooms. It usually works with a shower head above.
The tub sits inside a built deck or frame, with the rim resting on it. It needs more room and a finished deck, but allows many shapes.
A standalone tub with finished sides on every face, often with floor-mounted or wall-mounted fillers. It needs enough open floor and a plan for the drain.
Acrylic, enameled steel and cast iron each feel different and weigh different amounts. Heavier tubs may need a floor check before you commit.

Project fit
Plan ahead
The old tub has to come out in one piece or be broken up safely, and the new one has to come in. Doorways, stairs and condo elevators all matter.
Taking out an alcove tub usually disturbs the lower course of tile or panels. Plan for some surround work rather than assuming the walls stay untouched.
A new tub may have its drain on the other end or at a different height. The valve and spout may also need to shift to suit it.
Hidden water damage under an old tub is common in older bathrooms.
Consultation
Full replacement is the bigger project of the three. Bathtub refinishing recoats the existing tub surface, and a liner fits a molded shell over it, so neither one fixes a tub that cracks, flexes or leaks underneath. If your tub is sound and the issue is only the finish, refinishing may be a smaller and better-matched job. The refinishing vs replacement guide walks through that choice.
Replacing a tub does not by itself solve a leak that starts in the walls or the valve. If you notice soft flooring, staining on a ceiling below, or water where it should not be, stop using the tub and have the source checked.
Process
You explain what is wrong and what you want instead, and a provider asks about access and the home.
The provider measures the opening and looks at the surround, drain and visible flooring.
Type, size, material and drain side are matched to the space and your plans for the surround.
The old tub comes out, and any damage found behind or under it is discussed before work continues.
The new tub is set, connected and sealed, and the surrounding wall and floor finishes are completed.
Miami considerations
Many Miami bathrooms have been through more than one tub update, so layers of old work sometimes turn up during removal. Condominiums may limit work hours, require elevator padding or ask for advance notice before a heavy tub is carried in. Salt air can also be hard on metal drains and fillers.
Replacement makes more sense when the tub cracks, flexes when you stand in it, leaks underneath or has already failed after refinishing. If the tub is sound and only the surface looks tired, refinishing may be enough, and a provider can tell you which path suits it.
Often, if the bathroom has enough open floor around the new tub. A freestanding tub has no walls holding it, so the drain usually moves and the old alcove walls need finishing. A provider can explain the plumbing and wall work involved.
Usually some of it is. An alcove tub is tucked under the bottom row of tile or panels, so removing it tends to disturb that section. Matching old tile can be hard, which is why many homeowners update the surround at the same time. Ask the provider how they plan to handle it.
It is not unusual in older bathrooms. Once the tub is out, the provider can see the subfloor and framing and explain what repair is needed before the new tub goes in. Ask up front how hidden damage would be discussed.
It depends on the floor framing and the tub. Cast iron is far heavier than acrylic, especially once it is full of water and a person. On upper floors and in older homes, a provider may want to check the structure first or suggest a lighter material.
A liner is a molded shell fitted over your existing tub, which stays in place underneath. A replacement takes the old tub out entirely. A liner may suit a sound tub with a worn surface, while replacement fits when the tub itself is damaged or the wrong size.

Next step
Share your ZIP code, the current tub or shower and what you want to change. If the project fits, you can be connected with an independent provider who serves your area.