Does a curbless shower need a door?

Usually a fixed glass panel rather than a door. The panel controls overspray and draughts. Fully open arrangements work where the shower is deep enough to keep the spray well inside.

Will a curbless shower flood the bathroom?

Not if the fall is correct and the drain pulls water away from the opening. Problems come from insufficient slope, a badly placed drain or a shower that is too shallow — all design faults.

Shower Experts Idaho

Curbless & Accessibility

Can My House Have a Curbless Shower?

Written by Meridian Bath editorial team (author name to be added)

Reviewed by Trade reviewer to be assigned

Updated 2026-08-16

Short answer

Whether a curbless shower is possible depends on your floor structure, not your budget. Wood framing over a crawlspace or an accessible ceiling usually allows the shower floor to be recessed between the joists. Slab-on-grade construction requires either saw-cutting a recess into the slab or raising the surrounding floor. Where neither is acceptable, a low-profile single-step threshold is the honest alternative.

Key takeaways

Joist direction and depth decide feasibility more than anything else.
Slab homes can have level entries, but by a different and more expensive route.
A linear drain lets the floor fall in one plane, which suits curbless far better.
If a contractor promises curbless before looking at your floor, be sceptical.

What we look at first

1Which direction the floor joists run relative to the shower
2Joist depth and whether a recess can be formed without structural modification
3What is below the bathroom, and whether that ceiling can be opened
4Whether the home is slab-on-grade, and where the existing drain sits in it
5Where the drain can be relocated to, if it needs to move

When the answer is no

A low-profile threshold — a single shallow step rather than a traditional curb — removes most of the trip hazard and most of the visual break, at a fraction of the structural work. For many households it is the right answer, and it is a far better outcome than a compromised flush entry that does not drain properly.

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