What “walk-in” means in practice
A walk-in shower is a shower you step into without climbing over a tub wall. It can have a low curb, a curbless entry, a door, or just a fixed glass panel. On the Peninsula most of them replace a 60-inch tub in a hall bath, and the rest replace a cramped fiberglass stall in a primary bath.
What makes a walk-in shower last is not the tile but what is behind it: the pan, the slope, the waterproofing and the drain.
How we build one
- Demolition to the studs at the shower walls, with the room sealed and the floor protected from the front door in.
- Framing and blocking: we straighten the walls, frame niches and add blocking for grab bars, glass and a bench, even if you add the bars years later.
- Plumbing: a new pressure-balance or thermostatic valve at shower height, usually with a handheld on a slide bar, and a center or linear drain.
- Pan and waterproofing: a sloped mortar bed or a pre-sloped tray, then a bonded membrane up the walls. We flood-test the pan for 24 hours before any tile goes on.
- Tile: porcelain wall tile, a smaller-format or mosaic floor for grip, sealed grout and metal edge trims.
- Glass: measured after tile, installed about a week later. A curtain rod stays up until then.
Curb, low curb or curbless
| Curb (4–6 in.) | Low curb (2–3 in.) | Curbless |
|---|
| What it takes | Standard pan | Standard pan, careful slope | Floor recessed so it runs flat into the shower |
| Best for | Tight budgets, small alcoves | Most hall baths | Aging in place, wheelchairs, a seamless floor |
| On a slab (Eichler) | Easy | Easy | Means cutting the slab around radiant tubing |
What moves the price
- Where the drain goes. Reusing the tub drain is the low end. A centered or linear drain is the middle. A curbless recess is the high end.
- Glass. A fixed panel costs less than a hinged door; glass to the ceiling, for a steam-ready shower, costs more again.
- Tile size and layout. Large-format wall tile and a herringbone floor take more labor than the tile itself costs.
- Slab or crawlspace. Under a ranch, a drain move is a day of plumbing. In an Eichler it means scanning and saw-cutting the slab.