Walk-in shower or tub: which one for a body that's changing?
Most people arrive at this question with a product in mind. A walk-in shower, or a walk-in tub, or the tub-to-shower conversion the ad keeps showing them. That's the wrong place to start, and it's why so many bathrooms get rebuilt around the wrong thing.
Here's the right place to start, what each option actually asks of you, and the one decision that closes early no matter which you pick.
Start with the requirement, not the product
"I need a walk-in shower" is a product. "On my worst days I need to wash without stepping over anything and without standing the whole time" is a requirement. Write the second one down, in your own words, before you look at a single photo.
Then add the rest of what has to be true. Maybe you need to wash with one hand. Maybe you need to soak, because heat is the only thing that helps. Maybe somebody else has to be able to help you and needs room to stand. Maybe you're the one helping a child or a parent and need to get them in and out without lifting.
Your requirements decide the product. Sometimes they point to a shower. Sometimes, honestly, they point to a tub.
What a tub asks of you
Getting in: a step over the side, about 14 to 20 inches high depending on the tub, on a wet floor, usually while turning. Getting out: the same, but standing up from the bottom first, which is the hardest transfer in the house.
What it gives you: a soak, which for some bodies is the point, and a place to sit while you wash if you can get down and up.
If you need the soak and can manage the side with something to hold and a bench to sit on while you swing your legs over, keep the tub and plan the grab bars and the bench properly. That's a real answer, and it's cheaper than any renovation.
What a walk-in tub asks of you
The tub with a door in the side. You step in over a low threshold, sit on the built-in seat, close the door, and the tub fills around you. When you're done, you wait for it to drain before you can open the door.
What it asks: sitting in an empty tub while it fills and again while it drains, in a room that's usually cold. A seat that's fixed where the maker put it. And a big, heavy product that is expensive to buy, expensive to install, and expensive to remove if it turns out to be the wrong answer.
For some people it's exactly right, especially if the soak is the requirement and the transfer is impossible. For a lot of people it's a product they bought before they wrote down what they needed.
What a step-free shower asks of you
Nothing at the threshold. You walk, or roll, straight in. With a seat, a handheld shower head and a grab bar where your hand goes, you can wash sitting down, with one hand, on a bad day, without anyone in the house.
What it costs: it's a renovation, not a purchase, and it has the one decision in this post that closes early.
The decision that closes early
A shower with no step needs the floor to slope to a drain, inside the shower, without a curb to hold the water in. That means the floor under the shower sits lower than the floor outside it, or the whole bathroom floor is built up to meet it.
In a new build or a gut renovation, that's a line on a drawing. In an existing bathroom, it can mean cutting into the floor structure, which is a question for a contractor or an engineer, not me. Either way, it's decided before the plumber comes, because it decides where the drain goes, and once the drain is in and the floor is poured, the step is either there or it isn't for the life of the room.
A standard shower with a curb can be built any time. A step-free one has to be planned. If you're renovating a bathroom anyway, this is the decision to get on the drawing first, even if you're not sure you need it yet. The drain position costs nothing extra now. The curb you have to remove later costs the whole floor.
Sizes, for the drawing: the published standard for a shower you can roll into is 30 by 60 inches, and one you walk into with a seat is 36 by 36 (STD). Bigger is easier. Smaller is a squeeze on a bad day.
The short answer
If your requirement is a soak, plan around a tub, and make getting in and out the thing you solve. If your requirement is to wash without stepping over anything, sitting down, on your own, plan a step-free shower and get the drain on the drawing before anyone prices anything. If you don't know yet, get the drain on the drawing anyway. It's the cheapest insurance in the whole project.
The step into the shower is one of the decisions the free guide, The Decisions Your Renovation Makes Without You, sorts by when it closes. It's short and set in large print. Sign up and the download is yours.
