How curbless showers are built on slab foundations, how water stays in, drain options, costs drivers and whether it's the right choice for your bathroom.
A curbless (zero-threshold) shower has no step at the entrance, which makes it easier to use and gives a clean, open look. On Houston slab foundations, the shower floor usually has to be recessed into the slab or the rest of the bathroom floor raised so water drains correctly. A linear drain and a continuous waterproofing membrane extending beyond the shower are standard. It costs more than a curbed shower because of the slab work and precise sloping.
Why homeowners want curbless showers
No curb means no tripping hazard, easier access for walkers or wheelchairs, and a modern look with continuous tile. It is a common choice for aging-in-place remodels.
The slab challenge
Water needs a slope toward the drain. With no curb, the shower floor must sit lower than the bathroom floor. On a slab, that often means saw-cutting and recessing the slab in the shower area, or building up the surrounding floor.
Slab work must avoid post-tension cables if present, so the slab type has to be confirmed first.
Drains and waterproofing
Linear drains along the back wall or entrance allow the floor to slope in one plane, which works with large-format tile. Waterproofing should extend well beyond the shower opening, since splash reaches farther without a curb.
A flood test of the waterproofing before tile is installed is good practice.
Glass and layout
A fixed glass panel without a door is common. Placing the showerhead away from the opening and making the shower deep enough reduces splash.
Is curbless right for you?
Choose curbless for accessibility, long-term living or a high-end open look. If budget is tight and access isn't a concern, a low curb gives a similar look for less.
Have questions about your own project? Browse our Ask Novara answers, describe your project on the project request page, or call (281) 889-1068. Novara Construction serves Houston, Katy, Sugar Land, The Woodlands, Cypress, Pearland and Spring.
Curbless vs low-curb shower
| Factor | Curbless | Low curb |
|---|---|---|
| Accessibility | Best — no step | Small step |
| Slab work | Often required | Usually not |
| Splash control | Needs careful layout | Easier |
| Cost | Higher | Lower |
In pictures
Frequently asked questions
- Will water leak out of a curbless shower?
- Not if the floor is sloped correctly, the drain is sized properly and the layout limits splash. Waterproofing beyond the opening adds protection.
- Can any bathroom get a curbless shower?
- Most can, but slab type, post-tension cables and plumbing location affect feasibility and cost.
- What drain is best for a curbless shower?
- Linear drains are popular because they let the floor slope in one direction and work well with large tile.
- Is a curbless shower good for resale?
- It appeals to many buyers, especially for primary bathrooms and homes suited to aging in place.
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