In this guide10 sections
- 1Tub versus walk-in shower at a glance
- 2Count tubs across the whole house
- 3A “walk-in” shower is not automatically accessible
- 4Waterproofing is the real shower product
- 5Can the existing floor become curbless?
- 6Drain location and supply work move the scope
- 7Permits differ by scope and jurisdiction
- 8Maintenance and cleaning change with the layout
- 9Who each option is wrong for
- 10Compare the complete scopes
Choose a walk-in shower for a daily-use primary bathroom when the home already has another practical tub. Keep a tub when this is the only bathing room, young children use it, or soaking is part of the household’s real routine. A tub-to-shower conversion wins on easier entry, elbow room, and daily convenience; a tub wins on bathing flexibility and protects against narrowing the next buyer’s options. The wrong move is following a resale slogan without checking who uses the room, what remains elsewhere, and whether the floor can support a properly drained low-threshold shower.
In Denver’s older bungalows, ranches, and split-levels, the fixture decision often exposes a larger project. Supply lines, drain location, subfloor stiffness, wall damage, ventilation, and electrical clearances matter more than the label on the new fixture. Decide the use first, then verify that the room can deliver it.
Tub versus walk-in shower at a glance
| Decision axis | Keep or install a tub | Build a walk-in shower |
|---|---|---|
| Best daily user | Families bathing children, soaking users, households wanting maximum flexibility | Adults prioritizing easy entry, standing space, and frequent showers |
| Entry | High side requires stepping over; transfer aids need deliberate design | Low threshold is easier; true curbless work needs floor and drain planning |
| Water control | Factory tub contains water; surround and tub flange details still matter | Pan slope, waterproofing, curb or entry, door, and spray direction work as one system |
| Maintenance | Simple enclosure but difficult reach across the tub for some users | More grout and glass if oversized; easier physical access for cleaning |
| Permit implications | Like-for-like replacement can be simpler; plumbing and wall work still require local review | Drain relocation, electrical changes, framing, or structural recess can expand the permit scope |
| Resale | Preserves a bathing option, especially when it is the home’s only tub | Strong daily-use feature when another tub remains elsewhere |
| Wrong fit | User cannot safely cross the side and never bathes | It removes the only tub despite real household need or future flexibility |
Count tubs across the whole house
A primary bath is not evaluated in isolation. If a hall bathroom retains a usable tub, converting the primary alcove to a shower usually improves the room for the people using it every morning without removing the home’s bathing option. If a one-bath bungalow loses its only tub, the choice is more consequential.
Do not preserve an unused tub solely for an imaginary buyer, but do not assume every buyer showers exclusively. Families with infants, people who soak for comfort, pet owners, and some caregivers use tubs differently. Write down who bathes, who showers, whether anyone expects mobility to change, and which second bathroom is genuinely convenient—not merely present in a basement.
Appraisal does not apply one universal tub premium. Condition, bathroom count, room quality, and market context matter. A leaky, awkward tub is not more valuable than a well-built shower because of its fixture category. Likewise, an oversized shower does not compensate for leaving the house without a practical bathing option.
A “walk-in” shower is not automatically accessible
Low threshold, curbless, transfer, and roll-in describe different conditions. A small curb can be much easier than a tub wall while still controlling water reliably. A curbless shower eliminates the step but requires the floor plane, drain location, waterproofing, and adjacent clearances to be designed together. Simply cutting down an acrylic tub or laying tile to the old drain does not create a durable accessible shower.
The U.S. Access Board’s ADA guidance illustrates why dimensions and clear floor space matter in public and covered accessible facilities: a standard roll-in compartment uses a 30-by-60-inch clear interior, while a transfer compartment is 36 by 36 inches with defined entry and approach space. A private single-family bathroom is not automatically required to meet ADA standards. Those dimensions are useful design references, not a label to attach casually to any low curb.
If aging in place is a goal, plan wall backing before tile for future grab bars and a seat, place controls where they can be reached without standing under cold spray, use a handheld fixture, choose a slip-conscious floor, and preserve clear approach space. The blocking costs little while walls are open and is disruptive to add after waterproofing and tile are complete.
Waterproofing is the real shower product
Tile and glass are finishes. The shower succeeds because the pan, drain connection, wall membrane, corners, penetrations, curb or entry, and transitions form a continuous water-management system. Ask which listed system is being installed and where it terminates. Mixing incompatible components because each is individually familiar can create a weak assembly.
A tub has its own water-control details. The flange must integrate with the wall backing and waterproofing, corners need correct laps, and the tile or surround must shed water into the tub. Caulk is a maintenance joint, not the primary plan. On an exterior wall, insulation and air sealing must be restored without pushing plumbing into a freeze-prone location.
Colorado’s dry air can make a bathroom feel as if it dries quickly, but moisture still reaches cavities through failed joints. Winter temperature differences can reveal condensation around poorly insulated walls, while a hot shower adds a concentrated indoor load. Size and duct the exhaust fan to the exterior; do not terminate it in an attic where moisture can meet cold roof sheathing.
Can the existing floor become curbless?
A curbless conversion may require recessing or rebuilding part of the floor, selecting a shallow listed pan, changing joist strategy, or raising the surrounding bathroom floor. The drain needs continuous slope from the farthest wet point, while the dry room must remain flat enough for safe use. Door swings, toilet clearances, heat registers, and vanity bases can limit how the new plane develops.
Older Denver homes may have plank subfloors, multiple finish layers, notched framing, or prior patching below the tub. The former tub footprint can also hide rot at the valve wall or drain. A site inspection should determine framing direction, available depth, drain route, and floor stiffness before a curbless promise is made.
If structure or room height makes true curbless work disproportionate, a low, well-detailed threshold can be the better decision. Accessibility is a system of entry, space, controls, support, lighting, and slip resistance. One missing curb does not overcome a tight door or unreachable valve.
Drain location and supply work move the scope
A straightforward conversion keeps the wet area in the old tub alcove and uses a drain strategy approved for the new receptor. More ambitious layouts move the drain, valve, or shower head, which can require opening floor and walls. In slab-on-grade houses, drain relocation may involve concrete. In framed floors, boring and notching limits protect joists.
Replace hidden valves and questionable shutoffs while the wall is open. Confirm pressure balance or temperature control, access requirements, and the mounting depth of the selected trim. A beautiful valve set installed too deep for the finished wall is a preventable sequencing error.
Electrical work also follows the new wet zone. Lighting, receptacles, fans, heated floors, and switches must respect the adopted code and product listings. The bathroom layout should be reviewed as a whole instead of treating plumbing, tile, and electrical as separate decorations.
Permits differ by scope and jurisdiction
Denver’s quick-permit information includes showers, tubs, and sinks among residential plumbing work eligible for the trade-specific process. That does not mean every conversion is a plumbing-only permit. Structural floor alteration, a changed window, new circuits, ventilation work, or a larger interior remodel can require additional permits and review.
Boulder, Aurora, Lakewood, and unincorporated county properties follow their own permit authority and adopted amendments. Verify the parcel, not just the mailing address. Ask the contractor to list the permits, licensed trades, inspection sequence, and what must remain exposed for inspection before waterproofing or wall closure proceeds.
Maintenance and cleaning change with the layout
A tub-and-surround combination usually has fewer horizontal tile surfaces, but leaning across a tub wall to clean the far side can be difficult. A large shower removes that reach while adding glass, grout, niches, a bench, and more floor area. Every shelf and bench must drain; every glass panel adds edges that collect mineral residue.
Front Range water hardness varies by utility and household treatment, so test the actual cleaning burden on samples. Large-format wall tile reduces grout lines, while a shower floor needs smaller pieces or another surface capable of following slope and providing appropriate traction. Avoid a design that is easy to photograph but impossible for the intended user to maintain.
For a tub, choose between an integral surround and tile based on repairability, cleaning, and the desired finish—not on the assumption that tile is automatically premium. A properly installed simple surround can outperform a complicated tile assembly with weak waterproofing.
Who each option is wrong for
A tub is wrong for a primary user who struggles to step over the side, never soaks, and already has another tub available. Keeping it for resale while accepting daily fall risk and poor function is not a balanced choice.
A walk-in shower is wrong for a household that relies on the home’s only tub, or for a project that calls a raised-curb stall “accessible” without addressing approach, controls, blocking, and clear space. It is also wrong when the desired glass-heavy enclosure adds cleaning work the owner explicitly wants to avoid.
Compare the complete scopes
The separate guide to Denver bathroom remodel cost ranges explains estimated planning levels and the conditions that move them. A tub-to-shower proposal should identify demolition, plumbing, structural floor work, waterproofing system, tile or surround, glass, ventilation, electrical, permits, and painting. The only real price comes from seeing the room and what lies below it.
You can also review the Boulder bathroom transformation for ideas about sequencing finishes and fixtures without treating another house as proof of your scope. During a free walk-through, Apollo’s bathroom remodeling team checks the floor, plumbing wall, ventilation, clearances, and remaining tubs before recommending a conversion.
Deciding between a tub and walk-in shower? We will measure the room, inspect the likely drain and floor conditions, and map the permit and waterproofing scope before design starts.
