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Shower service

Tub-to-Shower Conversions

Removing a tub nobody uses and rebuilding the space as a full-size, properly drained shower.

Boise, Idaho bathroom alcove where a bathtub was replaced with a low-curb tiled shower
Tub-to-shower conversion in a Boise bathroom — the old 60-inch tub alcove rebuilt as a low-curb shower. (Boise, Idaho)

Short answer

A tub-to-shower conversion removes the bathtub and its surround, reworks the drain and valve for shower use, and rebuilds the alcove as a waterproofed shower. A standard 60-inch alcove tub converts into a generous shower without moving a single wall, which is why it is the most common shower project in Treasure Valley homes.

Why so many Idaho tubs get converted

Two housing patterns drive this project locally. In late-1990s and 2000s subdivisions across Meridian, Nampa and Kuna, primary suites were built around a large corner garden tub plus a cramped shower — the tub is filled once or twice a year while the shower gets used twice a day. In older Boise and Caldwell homes, the only bathroom has a single alcove tub with a shower head over it, and stepping over a tub wall stops being reasonable at some point.

In both cases the conversion is not a downgrade. It converts space you do not use into space you use every morning. The one thing worth checking first is whether the house still has a tub somewhere. Buyers with small children look for at least one, so if this is the only tub in the home, that is a conversation to have before demolition rather than after.

What changes when the tub comes out

  • The tub drain sits lower and further out than a shower drain, so drain relocation is normal, not an upsell
  • A tub spout diverter valve is replaced with a shower-only valve, and pressure balance requirements apply
  • The alcove floor is rebuilt with a sloped pan, because a tub provided the slope before
  • Walls that were only splash-zone above a tub now need full-height waterproofing
  • Framing is checked and blocking added wherever a grab bar, bench or niche will land

A 60-by-30-inch alcove tub converts into a shower with roughly the same footprint but far more usable standing room, because you gain the volume the tub deck occupied.

Entry, glass and threshold options

Conversion entry types
EntryWorks well whenConsider
Low curb with a glass panelStandard alcove, straightforward budgetSimplest, most predictable version of the project
Curbless / zero thresholdLong-term accessibility, wheeled entrySubfloor must be recessed; slope and drain placement are critical
Open walk-in with a fixed screenWider alcoves and larger bathroomsNeeds enough length to keep spray off the rest of the room

Tub-to-shower — questions

Do you have to move plumbing to convert a tub to a shower?
The drain almost always moves, because a tub drain sits in a different position and depth than a shower drain. The valve is also replaced. Both are inside the same wet wall, so the work stays contained.
Will removing our only bathtub hurt resale?
It can matter to buyers with young children if the house is left with no tub at all. If there is a tub in another bathroom, converting the primary suite tub is generally well received. We will raise it during the walkthrough rather than after demolition.
How long does a tub-to-shower conversion take?
Typically one to two weeks on site. Drain relocation, waterproofing cure time and glass lead time are the three things that set the schedule.

Tub-to-shower by city

Tub-to-shower case studies

Talk through your tub-to-shower project

Tell us what the room is doing today and what you want instead. We follow up to arrange a walkthrough and a written estimate.