Every morning you step over the same tub wall — the one that's a little higher than it used to feel, a little slicker underfoot. Or you stopped using the tub entirely and just stand in it to shower, climbing in and out of a basin built for bathing. A walk-in shower removes the obstacle instead of working around it: no curb to clear, water that drains where it should, and tile work you can actually keep clean. This page walks you through how one gets built right — the slope math, the waterproofing you never see, the flood test before a single tile goes down, and the details that make it safe for the next twenty years, not just the next two.
Start with why you're reading this. One of these four situations is usually behind it.
Stepping over a 14-to-16-inch tub wall was nothing at forty. At sixty-five, with a knee that complains on stairs, it's the riskiest part of the morning. Most falls in the home happen in the bathroom, and the tub wall is the obstacle in the middle of the room. Do now: notice whether you steady yourself on the wall or the towel bar when you step in — that's the signal, not your age.
The tub sits full of shampoo bottles while you stand in it to shower. You're cleaning, heating, and working around a basin you don't use — and climbing over its wall twice a day for no reason. Do now: ask yourself when you last actually took a bath. If you can't remember, the tub is furniture, not a fixture.
Staining on the ceiling below the bathroom, soft drywall beside the tub, caulk that keeps failing no matter how often it's redone — the waterproofing behind the surround has given up. A walk-in rebuild replaces the failed system, not just the surface. Do now: press the wall beside the tub surround. If it gives or sounds hollow, water is already behind it.
Nobody in the house needs grab bars yet — and that's exactly when to plan for them. Blocking goes behind the tile during the build; adding it later means tearing the wall open. A walk-in designed now with a curbless entry and reinforced walls is a bathroom that never needs rebuilding for accessibility. Do now: if a remodel is happening anyway, this is the cheapest moment it will ever be.
Once you've matched your moment, here's what the job itself covers — and where its edges are.
A walk-in shower project may require accessible entry design, a sloped shower floor, drain position, enclosure clearances and continuity of the waterproofing assembly. If the enclosure and drainage are staying the same and the work is limited to finish materials, compare the narrower bathroom tile installation scope.
Caulk keeps failing
Caulk that keeps splitting or discoloring means water is moving behind the surround. Every month it continues, moisture wicks further into the subfloor and wall framing. By the time the floor feels soft, the repair has grown from a shower rebuild into subfloor replacement.
Workarounds pile up
The shower chair, the grab bar suction-cupped to tile, the bath mat layered over the tub floor — each one is a workaround for a curb that shouldn't be there. Suction grab bars in particular fail without warning on textured tile.
Hard water sits on glass
Apopka's mineral-heavy water spots glass enclosures and clogs rain heads. Etching that sets for years can't be cleaned off — it's chemical damage to the surface. A new enclosure with a squeegee habit beats a restoration that can't happen.
Grout develops pinholes
It fails one pinhole at a time, and each pinhole is a straw into the wall cavity. In Florida humidity, a damp wall cavity grows mold long before it shows on the surface.
Bathroom circuits need GFCI protection, and any wiring near where grab bars will be anchored gets located before a single screw goes in. If the exhaust fan shares the lighting circuit and can't clear the room, that's a ventilation problem to solve now, not after the tile is up.
The waterproofed pan gets plugged, filled to at least two inches, and held — the Florida Building Code requires the liner to hold water with zero leakage before tile goes down. On a curbless build with no threshold to hold water, the crew builds a temporary dam for the test. No test, no tile. Ask for it by name.
Shower floors need tile with real grip — the industry measures it as DCOF, and anything at or above 0.42 is rated for wet areas. Polished large-format tile that looks stunning dry can be treacherous wet. The floor tile gets chosen for grip first, looks second.
Most Apopka homes sit on concrete slabs, and a true zero-threshold shower needs the drain recessed below floor level. On a slab that means cutting concrete to set the drain and build the quarter-inch-per-foot slope — real work, not a skim coat. The alternative is raising the bathroom floor around the shower, which trades the threshold for a ramp. Either is honest; pretending slope can be faked on a flat slab is how showers fail in the first month.
Dissolved calcium and magnesium spot glass, film up fixtures, and choke rain-shower heads with dozens of tiny nozzles. Plan for it: glass with a protective coating, a squeegee kept in the shower, and — if the spotting is already bad elsewhere in the house — a water-softener conversation before the new enclosure goes in.
A walk-in's open design lets steam travel further than a closed tub-shower ever did. The exhaust fan has to clear the whole bathroom's air, and in Florida's climate "the window opens" is not a ventilation strategy. An undersized fan means moisture settling on every surface, every day — the slow start of a mold problem.
Moving a drain or supply lines means a plumbing permit through Orange County. The permit buys you an inspection of the waterproofing and drain work — the two things you can't see after tile. A contractor who suggests skipping it is asking you to trust the invisible work with no verification.
Measurements, drain location, subfloor or slab evaluation, glass layout, fixture placement. This is where the curbless-vs-low-threshold decision gets made honestly, based on what's under your floor — not on a brochure.
The old unit comes out. Plumbing gets roughed in: drain repositioned, supply lines run, valve body set. On slabs, concrete cutting happens now. Grab-bar blocking goes into the walls — two-by lumber where future bars will anchor, documented with photos before it disappears behind backer board.
Membrane across the floor and up the walls, sealed at corners, niches, and penetrations. Then the pan is plugged, filled, and held — the flood test the code requires. It passes or the tile waits. This is the single most important day of the project.
Floor tile laid to the quarter-inch-per-foot fall — verified with a level as it goes, because slope can't be fixed after the thinset cures. Wall tile, niches, bench. Grout, then cure time.
Tempered glass measured and set (glass is always measured after tile, never before — walls are never as square as they look). Trim, valve handles, shower head, caulk at the transitions. Final walkthrough: every seam, the drain flow, the fan.
Demolition is loud and dusty — one day, usually. Then the quiet days: waterproofing, flood test, tile setting, grout curing. You won't have that shower for the length of the project; plan the household's other bathroom accordingly.
Rough-in and fixture work need the water off, but a competent crew schedules it in hours and tells you which hours. If nobody tells you, ask.
If the slab needs recessing for a curbless drain, that's a diamond-blade day — noise, dust, and vibration. Everything breakable comes off the walls in adjacent rooms.
Frameless panels are measured after tile and fabricated to order — that's a lead time measured in weeks, not days. The shower is usable before the glass arrives only if the plan accounts for it; confirm the sequence upfront.
Be there for it, or ask for photos of the filled pan with a timestamp. It's the one verification you'll never get to repeat.
Yes, but the slab has to be cut. A true zero-threshold entry needs the drain recessed and the floor sloped a quarter inch per foot toward it — impossible on a flat slab without removing concrete in the shower footprint. The alternative is raising the surrounding bathroom floor to meet a sloped pan. Both work; what doesn't work is faking slope on flat concrete.
It depends on the tile. A linear drain along one wall lets the floor slope in a single flat plane, so large-format tile can run unbroken from the bathroom into the shower. A center drain needs the floor to pitch from four directions into the middle, which demands small mosaic tile to follow the compound slope. Pick the tile first, then the drain that serves it.
The flood test. After the membrane goes down and before any tile, the pan is plugged, filled to at least two inches, and held — Florida's plumbing code requires zero leakage before tile proceeds. Ask for it by name and ask to see it. A contractor who treats the test as optional is telling you everything about the waterproofing.
Not if the slope and drainage are right. The quarter-inch-per-foot fall is the containment system — water flows to the drain because it has nowhere else to go. A concealed water stop at the shower boundary, finished at tile height during waterproofing, blocks migration under the tile. Splash beyond that is a glass-layout question, not a drainage failure.
Tile rated for wet areas — the industry measures slip resistance as DCOF, and 0.42 or higher is the threshold for wet barefoot traffic. Small mosaics grip well because grout lines add traction; large-format tile needs a matte or textured finish. Polished tile belongs on walls, not underfoot.
Yes — the blocking, not necessarily the bars. Solid wood blocking goes behind the tile during the build so bars can be anchored to structure later without opening walls. The blocking is invisible and costs little during construction; adding it after means demolition. Tell the contractor it's an aging-in-place plan upfront.
It spots glass, films fixtures, and clogs multi-nozzle rain heads with mineral scale. Choose glass with a protective coating, keep a squeegee in the shower as a daily habit, and consider addressing the water itself — a softener or treatment system — before the new enclosure goes in. Etching left for years becomes permanent surface damage no cleaner removes.
If drain or supply lines move, yes — a plumbing permit through Orange County, which buys an inspection of the waterproofing and drain work you can't see after tile. A like-for-like fixture swap with no plumbing changes is simpler. Whoever does the work should pull the permit and schedule the inspection; treat "we don't need one" as a disqualification when plumbing is being moved.
shower liner flood-test requirements (fill to at least 2 inches, hold with zero leakage before tile) and waterproofing provisions.
shower receptor construction: floor slope at least 1/4 inch per foot toward the drain, flanged drains for water-tight joints, curb threshold minimums.
the DCOF slip-resistance test method; 0.42 as the wet-area threshold for hard-surface flooring.
coverage rates, seam treatment, and penetration sealing for the waterproofing system used; the flood test verifies the installation, not the product brochure.
Before you hire anyone: get the waterproofing method, the flood-test commitment, and the drain plan in writing — then compare that scope against other bids, not just the bottom line. How to compare home service estimates walks through what a real shower quote contains.
Read the related homeowner guide ↗Call with your shower footprint's rough measurements, what's there now, and whether aging-in-place is part of the plan. Ask how the waterproofing gets flood-tested — the answer tells you everything.
