Roll-in shower readiness: blocked walls for grab bars, linear drain, slip-resistant floor, OR install at construction
ROT/EXT-AIP-ROLL-IN-SHOWER-READINESSDescription
Even if a roll-in shower isn't installed at construction, the primary bathroom should be ROLL-IN READY: blocking behind drywall at typical grab-bar locations (12 in × 36 in wood blocking at the back wall, 12 in × 42 in on the side wall — both 33-42 in above the floor); linear drain installed during slab pour OR the shower pan designed for curbless conversion later; slip-resistant flooring (R-rating of R10 or better). Future curb removal is then a tile-replacement project rather than a re-plumb.
Why this exists
Most retrofits to roll-in are far cheaper if blocking + linear drain were planned in. Spec'ing blocking + a future-ready drain at construction is the responsible move for any home that may serve aging owners — and the cost is negligible.
Categories
Source
Solver enforcement
Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.
Related directives
- Full bathroom sizing · BATHROOM-MIN
- Half bathroom sizing · HALF-BATH-MIN
- Half bath near public zones · HALF-BATH-NEAR-PUBLIC
- Bath not opposite kitchen / dining · BATH-NOT-OPPOSITE-DINING
- Aging-in-place blocking · AGING-IN-PLACE-BLOCKING
Last reviewed 2026-05-15.