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Walk-In Shower · Granite Bay, CA · case study

Tub-to-shower conversion · Granite Bay

1990s alcove tub out, full waterproofing system in, large-format sandstone porcelain on the walls, a frameless glass partition, and a rainfall + handheld set on a thermostatic valve.

Days on site

9

Service

Walk-In Shower

Where

Granite Bay

Scope tier

Mid-tier scope

Tub-to-shower conversion · Granite Bay — finished install

Before / after

Drag to see what changed

Same camera angle, same room — drag the slider to reveal the before and after.

Walk-in shower with large-format sandstone porcelain and a frameless glass partitionAfter
1990s acrylic alcove tub in a Granite Bay bathroom before remodel
Before
Alcove tub out, full waterproofing system in — same footprint, nine working days.

The brief

What the homeowner wanted

The homeowners hadn't used the alcove tub in years and wanted the room to feel like a calm spa rather than a 1990s production-builder bathroom. The footprint stayed exactly the same — we kept the existing drain location and the same supply rough-in — but everything inside the wet zone was rebuilt from the studs out. The result reads custom but the timeline stayed inside 9 working days because the plumbing didn't move.

The scope

Exactly what we built

A scope checklist is how every Tanbark project starts. Below is the real list we worked from on this build — the same level of specificity goes into the itemized estimate you'll get after your in-home walk-through.

  • Removal of acrylic alcove tub, surround panels, and original drywall
  • Inspection + correction of subfloor (one soft spot replaced)
  • Re-routing of valve to ergonomic height + thermostatic mixing valve install
  • Full waterproofing membrane system (Schluter Kerdi-equivalent)
  • Custom curbed pan with linear floor drain
  • Large-format sandstone porcelain on three walls, mitered porcelain corner detail
  • Recessed wall niche with LED accent + warm color temperature
  • Frameless single-panel + hinged glass enclosure with brushed-nickel hardware
  • Rainfall head + handheld set + thermostatic controls
  • City of Roseville / Placer County plumbing permit + final inspection

Materials + finishes

What we specified

We publish the actual material specs because finishes are what make a build feel custom — and because the cheap version of every line below is the difference between a one-year project and a twenty-year project.

  • Sandstone-tone large-format porcelain (24" x 48") with mitered corner detail
  • Schluter Kerdi-equivalent waterproofing membrane system
  • Brushed-nickel rainfall + handheld set, thermostatic mixing valve
  • Linear floor drain in brushed stainless
  • Frameless 3/8" tempered glass + concealed hinges
  • Warm 2700K LED accent in tile niche

Material + finish detail

The details up close

Tub-to-shower conversion · Granite Bay — material and finish detail 1
Tub-to-shower conversion · Granite Bay — material and finish detail 2

Day by day

How 9 working days actually go

Visitors love seeing the schedule honestly. Below is how this project actually broke down. Your timeline will look similar; the exact day count lives in your written estimate.

  1. 1

    Demo + protection

    Day 1

    Floor-to-finish-door floor protection laid, tub out, walls back to studs.

  2. 2

    Subfloor + plumbing

    Day 2-3

    Soft subfloor patch, valve moved to ergonomic height, thermostatic mix installed.

  3. 3

    Waterproofing + pan

    Day 4

    Pan formed, linear drain set, full Kerdi-system membrane wrapped.

  4. 4

    Tile

    Day 5-7

    Large-format porcelain set with mitered corners and LED niche; floor laid last.

  5. 5

    Glass + fixtures

    Day 8

    Frameless panel + door measured, drilled, set; final fixtures live-tested.

  6. 6

    Final + inspection

    Day 9

    Sealer cure, final cleanup, county plumbing inspection, walk-through with homeowner.

Why this build matters

The details that took it from good to great

  • Keeping the existing drain + supply location is what kept this build inside 9 working days — when plumbing doesn't move, the whole project compresses.
  • Mitered porcelain corners (no metal Schluter trim) is the single biggest visual upgrade in a tiled shower.
  • Linear floor drain + sloped substrate means we could have gone curbless if the homeowner had wanted — same waterproofing system supports either.
Nine days. Floor was protected the whole time, the house stayed clean, and the curbless drain still moves water perfectly two years in.

Granite Bay homeowner

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Planning an accessible bathroom like this?

Grab the free Aging-in-Place Bathroom Planning Checklist — the clearances, curbless shower spec, grab-bar blocking, and fixtures we used on builds like this walk-in shower in Granite Bay.

  • The clearances to lock down before anything else
  • Curbless shower done right — and the door question
  • Grab-bar blocking: do it now or regret it later
  • Anti-scald valves, handhelds, comfort-height fixtures
  • Lighting + slip choices that prevent the most falls

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About the number on a project like this:

We don't publish project totals because the same build can cost very differently depending on the home, the existing conditions, the finish level you actually want, and how much custom millwork or stone the design calls for. The right number for your project lives in your itemized written estimate, which we deliver within 48 hours of your in-home walk-through.

On the walk we bring the same scope-checklist approach you see above. By the end of the visit you'll know exactly which line items are fixed scope, which are selections, and where the real budget pressure lives.

Next step

Want a build like this on your home?

Book a free in-home walk-through. A Tanbark Project Manager (not a salesperson) will measure, ask the right questions, and bring you an itemized scope-built estimate within 48 hours.