Comparisons
Curbless or low curb: which entry suits your bathroom
Last updated
Short answer
A curbless shower needs the floor to be recessed or the whole bathroom raised, plus careful slope and usually a linear drain. A low curb keeps the structure simple and still steps down to about two inches. Curbless is the better long-term accessibility answer; a low curb is the practical answer when the floor structure will not cooperate.
Key takeaways
- Curbless is a structural decision made before demolition, not a finish choice.
- Over a crawlspace, recessing the floor is usually possible; over a slab it is harder.
- Curbless needs more slope planning and a wider wet zone, often with a linear drain.
- A low curb contains water more forgivingly and costs less to build.
- Both should have blocking for grab bars, whether or not you install them now.
The structure decides first
For a truly flush entry, the shower floor has to start lower than the bathroom floor. In a home over a crawlspace, joists can often be modified to recess the pan. Over a concrete slab the options are to recess into the slab or to build the bathroom floor up and add a small ramp at the door.
Keeping water where it belongs
- A wider glass panel or a longer dry zone between the head and the opening
- A linear drain along the back wall or the entry, which lets the floor slope in one plane
- Slightly more slope across the entry area than a standard alcove needs
- A splash zone plan for the surrounding floor finish
Which one to pick
| Curbless | Low curb | |
|---|---|---|
| Accessibility | Best; rollable and no step | Good; a small step remains |
| Floor work | Recess or raise required | Standard framing |
| Water containment | Needs deliberate slope and glass planning | Curb does most of the work |
| Cost | Higher, mostly structural | Lower |
| Cleaning | Easiest, nothing to step over | Curb top needs attention |
Frequently asked questions
- Can a curbless shower be done in a second-floor bathroom?
- Often yes, depending on joist direction and depth. It is something we assess on site before promising it.
- Should I add grab bars now or later?
- Add the blocking now either way. Blocking is inexpensive while the wall is open and impossible to add cleanly once it is tiled.
More in Comparisons
Services related to this guide
Ready to talk about your shower?
Tell us what the room is doing today and what you want instead. We follow up to arrange a walkthrough and a written estimate.