Curbless showers (no step over a threshold) are increasingly the default choice for Brevard primary bathroom remodels. They look modern, work for any age or ability, are easier to clean, and dramatically improve aging-in-place compatibility. The main technical challenge is drainage - water has to go somewhere when there's no curb to stop it.
How Curbless Drainage Works
Three drainage approaches: (1) Linear drain along the shower wall or in the floor entry zone, with the shower floor sloped toward it - cleanest aesthetic. (2) Centered traditional drain with 4-way slope to the drain - lowest cost but more visible slope. (3) Trench drain at the entry threshold to catch water before it leaves the shower zone.
Brevard's typical concrete-slab construction works well for curbless because we can chip down the slab in the shower area to create the depression for drainage. Wood-frame construction requires more substantial subfloor work.
Waterproofing Requirements
Curbless showers MUST have flawless waterproofing because there's no curb to contain water if the system fails. Schluter Kerdi membrane is the standard. Any seam, penetration, or corner gets special treatment. The waterproofing extends out beyond the shower zone by 6-12 inches to handle splash.
Cost of Curbless Shower Conversion
Standard tub-to-curbless-shower conversion: $8,000-16,000 depending on size and finish. With higher-end tile and premium fixtures: $14,000-25,000. The curbless premium over a curbed shower is typically $1,500-3,500 due to the additional slab work and drainage requirements.
Aging-in-Place Benefits
No threshold = no tripping hazard. Easy entry with a wheelchair or walker. Can install grab bars on multiple walls easily. Comfort-height bench or fold-down seat option. Handheld showerhead on slider for seated use. These features work for everyone today and accommodate any changes that come later.