Roll-In Shower vs. Walk-In Shower: What's the Difference?
A walk-in shower is any shower without a tub, usually with a low curb you step over, while a roll-in shower has no curb and is sized so a person using a wheelchair or shower chair can enter directly. Every roll-in shower is a kind of walk-in shower, but most walk-in showers are not roll-in showers.
Updated October 17, 2026. Written by the editorial team from the published sources listed at the end. This is general information, not medical or accessibility advice.
Roll-in, walk-in and transfer showers compared
| Feature | Walk-in shower | Roll-in shower | Transfer shower |
|---|---|---|---|
| Entry | Low curb, typically 2 to 4 inches | No curb; threshold of ½ inch at most | Threshold of ½ inch at most |
| Size | Any | 30 by 60 inches minimum inside, with a 60-inch entry; alternate type 36 by 60 inches with a 36-inch entry | 36 by 36 inches inside, 36-inch entry |
| Wheelchair use | User steps or transfers; chair stays outside | A shower chair or wheelchair rolls in | User moves from the chair to a seat; chair stays outside |
| Seat | Optional | Optional; folding if provided | Required |
| Floor | Raised base or pan | Flush or nearly flush, sloped to the drain | Small pan with a low threshold |
Key takeaways
- The difference is the entry and the size, not the label on the product.
- “Curbless” is not the same as “roll-in”: a curbless shower can be too small for a wheelchair.
- The ADA Standards set the dimensions many people use as a reference, but they cover public and commercial buildings, not a typical private home.
- If a wheelchair user will bathe at home, the space around the shower matters as much as the shower itself.
What a walk-in shower is
“Walk-in” describes a layout: a shower stall with no tub, so you step in rather than climb over a tub wall. Most have a curb a few inches high that holds water in, and Angi puts the typical range at 2 to 4 inches. Many have a glass panel or door. Because the word describes the layout, remodelers also use it for curbless showers, so ask exactly what is being proposed. For design variations, see our comparison of walk-in shower ideas: curbless, low-curb and glass options.
What a roll-in shower is
A roll-in shower lets someone in a shower chair or wheelchair roll straight in without moving to a seat. The U.S. Access Board describes roll-in compartments as providing access for shower chairs and other wheeled mobility aids without the need to transfer. In the 2010 ADA Standards, a standard roll-in compartment is at least 30 inches wide by 60 inches deep inside, with a 60-inch-wide entry on the open face. A 30 by 60 inch clear area is also required next to the open side. An alternate design is at least 36 by 60 inches with a 36-inch entry at one end of the long side.
The threshold can be no higher than ½ inch, and the Access Board adds that a flush transition, such as one made with a trench drain, is easier to use. The floor can slope to a drain; the Board notes that a slope of 1:48 at most controls water without hurting accessibility. If a seat is included, it must be a folding one so it does not block a shower chair.
What about a transfer shower
A transfer shower is the third accessible type. It measures 36 by 36 inches inside, has a seat, and is for people who can move from a wheelchair to the seat. Someone who can transfer safely may find it easier to use than a larger roll-in, since grab bars and controls are within reach from the seat. Someone who cannot transfer safely needs a roll-in. An occupational therapist can help you decide which fits, before you design the room.
Do the ADA rules apply to your home?
The ADA Standards apply to places of public accommodation, commercial facilities and government facilities. They are a useful benchmark for a private home, not a rule, and a remodeler in Chicago is not required to follow them in your bathroom. They do mark where “roll-in” has a defined meaning. If a product is sold as “ADA compliant,” ask which part of section 608 it meets and at what size. The ADA does allow dwelling units to have wall reinforcement for a later seat instead of installing one, which is a sensible idea for any home: ask the remodeler to put solid blocking behind the tile.
Planning a roll-in shower in an older Chicago bathroom
- Space. A 60-inch tub alcove is long enough for a 30 by 60 inch shower, but the standard also calls for clear floor space beside the open side. A true roll-in can mean changing the room layout, which affects the permit path. See whether you need a permit to remodel a bathroom in Chicago.
- Floor structure. To make the entry flush, the shower floor usually has to sit lower than the room, which may mean working in the floor framing. Glass-industry guidance says this is difficult in a remodel and should be done right.
- Water control. Without a curb, slope, drain placement and waterproofing carry the load. A North Carolina curbless-shower installation guide advises at least 36 inches of depth for any curbless shower, even though 30 inches is the accessibility minimum, because a deeper shower is easier to keep dry.
- Condos. A leak from a new curbless floor lands in the unit below. Read remodeling a condo bathroom in Chicago.
Which one fits you
- If everyone can step over a few inches, a low-curb walk-in is usually simpler to build.
- If you want flexibility for later, ask about a curbless floor of at least 36 by 60 inches with blocking for grab bars and a seat.
- If someone uses a wheelchair or shower chair now, plan a roll-in sized to the equipment they use, and test the layout with the actual chair.
Once you know the type, ask each remodeler for an itemized written scope and price for the same design. Read about walk-in and roll-in showers in Chicago and the walk-in shower cost guide. Check any remodeler’s license first: how to verify a Chicago contractor license.
Frequently asked questions
Is a roll-in shower the same as a curbless shower?
No. A roll-in shower is curbless, but a curbless shower is not always a roll-in. A roll-in has to be large enough, and have enough clear space beside it, for a wheelchair or shower chair.
How big is a roll-in shower?
In the 2010 ADA Standards, a standard roll-in is at least 30 by 60 inches inside with a 60-inch entry, and an alternate type is at least 36 by 60 inches with a 36-inch entry.
How high can the threshold be on a roll-in shower?
The ADA Standards allow a threshold of no more than 1/2 inch. The U.S. Access Board notes that a flush transition, such as with a trench drain, is easier to use.
Do the ADA shower rules apply to my house?
The ADA Standards cover public accommodations, commercial facilities and government facilities. They are a useful reference for a private home but not a requirement for it.
Can a wheelchair use a walk-in shower with a curb?
Generally not directly. A curb of a few inches means the person has to transfer to a seat or step in, which is why a roll-in or transfer shower is usually planned for wheelchair users.
Sources
- U.S. Access Board, Guide to the ADA Standards, Chapter 6: Bathing Rooms: access-board.gov (roll-in and transfer compartments, thresholds, 1:48 slope, folding seat). Accessed October 22, 2026.
- U.S. Access Board, ADA Accessibility Standards, scope of coverage: access-board.gov. Accessed October 22, 2026.
- 2010 ADA Standards, section 608, Shower Compartments (sizes, clearance, thresholds, residential exceptions): corada.com. Accessed October 22, 2026.
- Angi, “What Is a Roll-In Shower?”: angi.com (walk-in threshold 2 to 4 inches, roll-in versus walk-in). Accessed October 22, 2026.
- AccessibleBathGuide, “Curbless Shower: Design, Cost, and Accessibility” (curbless versus roll-in terminology): accessiblebathguide.com. Accessed October 22, 2026.
- “Curbless Showers: An Installation Guide” (North Carolina accessibility-code booklet; depth and water control): sci-bc.ca. Accessed October 22, 2026.
- DT Glass, “Avoiding Trip-Ups in Your Curbless Shower Design” (rebuilding the floor structure): dtglassinc.com. Accessed October 22, 2026.
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