Walk through almost any Borderland house built in the last fifty years and you’ll find the same bathroom: a tub-shower combo with sliding glass doors that nobody has taken an actual bath in since the kids grew up. Stepping over that tub wall twice a day gets old — and for a lot of homeowners, it eventually gets risky. That’s why the tub-to-shower conversion has become the most requested bathroom remodel in Las Cruces and El Paso alike: it turns the least-used fixture in the house into the most-used one, done right, in a space you already own.
This guide covers what the job actually involves, the one part of it that matters more than everything else combined, the prefab-versus-tile decision, and the questions that separate a remodeler you can trust from one who’s guessing.
Why This Is the Most Popular Bath Remodel
Two reasons, and they reinforce each other. The first is daily use: a shower is what you actually do every morning, and a walk-in with a low or zero-threshold entry, a bench, and decent glass is simply a better tool for the job than a fiberglass tub with a curtain. The second is aging in place. A tub wall is a leg-lift over a slick surface, twice a day, every day — and it’s one of the most common places for a fall at home. Converting to a walk-in shower, ideally with grab bars and a low threshold, is one of the highest-impact changes you can make if you plan to stay in your house into your seventies and beyond, or if a parent is moving in with you. Plenty of homeowners in their forties do it now precisely so they never have to do it in a hurry later.
What the Job Actually Involves
A conversion sounds like a swap. It’s really a small sequence of trades in a tight space:
- Demo. The old tub and surround come out, usually along with the wall material behind them. This is also the moment any hidden surprises — old water damage, corroded valves — show themselves, which is why good contractors talk about contingencies up front.
- Plumbing moves. A tub drain and a shower drain are not in the same place and are not the same size. The drain typically gets relocated and upsized, and the valve is usually replaced and sometimes raised. This is real plumbing, not fixture-swapping.
- Pan and waterproofing. The shower pan is built and the walls are waterproofed. Hold that thought — it gets its own section, because it’s the whole ballgame.
- Walls and finish. Tile or a prefab surround goes in, then glass, fixtures, and trim.
Because drain lines and valves are moving, this is permit territory in both cities — structural it isn’t, but plumbing it certainly is. If that part of the process is fuzzy to you, our guide to how permitting actually works in Las Cruces and El Paso explains who pulls the permit (your contractor) and why the rough-in inspection is your friend.
Waterproofing: The Part That Matters Most
Here is the uncomfortable truth about showers: tile is not waterproof. Grout is not waterproof. The waterproofing is a system behind the pretty surface — a properly sloped pan, sealed corners and seams, and a membrane or board system on the walls — and by the time you’re admiring the finished tile, it’s completely invisible. A gorgeous shower over bad waterproofing is a slow-motion leak into your subfloor and framing, and you won’t know for years.
This is why the single best question you can ask a remodeler is: “What waterproofing system do you use — by name?” There are several reputable membrane and foam-board systems on the market, and a pro will name theirs immediately and tell you why they like it, usually with more enthusiasm than you bargained for. A contractor who answers “we use cement board and a plastic sheet, that’s how we’ve always done it” — or who seems puzzled by the question — is telling you the most important part of your shower will be improvised.
Prefab Surround vs. Tile
Both are legitimate choices; they’re just different bargains.
- Prefab (acrylic or composite surround): faster to install, fewer grout lines to maintain, and generally the more budget-friendly path. The trade-offs are limited size and design options — the unit has to fit your alcove, not the other way around — and a look that reads more practical than custom.
- Tile: any size, any layout, any look, including the curbless entries and built-in niches and benches that make aging-in-place showers work well. The trade-offs are more labor, a longer timeline, grout to maintain, and total dependence on the quality of the waterproofing underneath.
An honest rule of thumb: prefab is rarely a mistake in a hall bath or rental; tile earns its keep in the shower you’ll use every day for twenty years, provided the person installing it can answer the waterproofing question above.
One Tub in the House: The Resale Question
Before you convert, count your tubs. The conventional wisdom among agents is that a home should keep at least one bathtub somewhere for resale — families with small kids bathe them in tubs, and some buyers simply expect one. If you have two or three bathrooms, converting the primary bath to a walk-in shower while the hall bath keeps its tub is the no-regrets move. If you have exactly one bathroom, think harder: the conversion may still be right for how you live, especially for aging in place, but go in knowing you’re making a choice a future buyer might weigh. Your house should serve you first — just make the trade-off on purpose rather than discovering it at listing time.
Timeline Expectations
A straightforward prefab conversion often runs on the order of days; a full custom tile shower is typically measured in a couple of weeks or more once you account for demo, plumbing, inspection, waterproofing cure times, tile, grout, sealing, and glass — which is often measured and fabricated after the tile is done, adding its own wait at the end. Ask your contractor to walk you through the sequence with rough durations, and be suspicious of anyone promising a fully tiled shower in a long weekend. Waterproofing and mortar need cure time, and cure time doesn’t negotiate.
Questions to Ask Your Remodeler
- What waterproofing system do you use, by name, and how do you test the pan before tiling?
- Who does the plumbing — your crew or a licensed plumber — and are they licensed for it?
- Will you pull the permit, and is the rough-in inspection built into your schedule?
- What’s the sequence and timeline, including glass fabrication at the end?
- What happens if you open the wall and find water damage — how are surprises priced?
Confident, specific answers to all five, in writing where it counts, and you’ve likely found your remodeler. For the full checklist — license, insurance, references, contract — see our guide on how to vet a contractor in New Mexico vs. Texas.
Ready to lose the tub wall? Browse our directory of kitchen and bath remodelers serving Las Cruces and El Paso and request a quote — and ask every one of them the waterproofing question.