Slope replaces the curb
Remove the curb and the floor has to do the job the curb used to do — sloping consistently toward a linear or center drain without creating a lip anywhere a foot might catch. That's a framing and slab question before it's a tile question.
Build a complete scope
- What the existing plumbing and wiring turn out to be once walls are open
- Waterproofing detail behind tile, and how it is inspected before it is covered
- Whether any change is visible from the street on a designated property
- Access and debris handling on a steep lot, which is a real cost line here
- Permits, trade inspections, cleanup, and what the warranty covers
Asheville context
Asheville's building stock spans Gilded-Age sanatorium-era cottages, the English-style rowhouses of Biltmore Village, Arts-and-Crafts bungalows in Montford and West Asheville, and steep-lot construction wedged into mountainside grades. On a house built into a slope, floor framing can already be uneven before a curbless shower is even considered.