Skip to content

Bathroom remodeling

Wet Room Conversion in Riverside, CA

Riverside Kitchen & Bath Remodeling is Riverside County's wet room specialist, building fully waterproofed level-entry bathrooms and specializing in sub-tile membrane systems, sloped pan construction, and linear drain installation. We offer large-format porcelain and natural stone wall installations and frameless glass splash panels.

  • Licensed, insured & bonded
  • Itemized written estimates
  • Permits pulled and inspections scheduled
  • Riverside & the Inland Empire

Request a Free Estimate

Or call (951) 589-3364. Calls only, we do not receive text messages.

Our team provides thermostatic valve and rain-head plumbing, delivering open spa-grade bathrooms for homes and hard-wearing, fully sealed construction on every project. Backed by a current California contractor license and general liability insurance, we handle everything from a single walk-in shower rebuild to a whole-room wet bath conversion.

From bonding the membrane into the drain flange to flood-testing the pan before a single tile is set, our team handles every detail. Serving Riverside along with Rubidoux, Moreno Valley and Rancho Cucamonga, we ensure fast, efficient service and deliver reliable, professional, and watertight results on every wet room project.

Request a free written estimate for a free wet room assessment. We look at your floor structure, drain position and ventilation before anyone talks about tile.

What a Wet Room Actually Is

A wet room has no contained shower area. No curb, no pan lip, often no door. The whole floor is laid to a gradient running toward the drain, and the entire room is the wet area. A conventional bathroom keeps water inside a 3 by 5 foot box; a wet room assumes water reaches everything.

Level-entry wet rooms became popular mainly because waterproofing systems got better. Bonded membranes and sealed drain assemblies are far more reliable than what the trade had two decades ago, and that, more than any design trend, made the format practical in ordinary homes.

The Waterproofing Is the Job

Tile and grout do not keep water out of your house. Tiles are largely waterproof themselves, but grout and the setting materials behind them are generally porous, so water passes the surface and reaches whatever is underneath. That layer is all that stands between your shower and your framing.

A wet area needs multiple layers of protection, with a membrane covering the walls and the floor beneath the tile, and in a wet room those membranes do not stop at the shower zone. They run the full floor, up every wall to height, into the corners with reinforced banding, and into the drain flange, where the membrane is clamped or bonded so there is no gap at the one point every drop is heading toward. Every penetration is detailed on its own: valve body, mixer, niche, each screw.

Large-format tile provides better water defense than small mosaic, because there is far less grout line per square foot. Mosaic still earns its place on a sloped floor, where small tiles follow the fall, so the usual answer is large format on the walls and a smaller module underfoot.

Before any tile is set, the pan gets flood tested. We plug the drain, fill the floor and leave it. If it holds, we tile. If not, we find out with nothing covering the problem rather than in eighteen months, when a stain shows on a ceiling below.

See the Standard of Finish

Riverside kitchen with dark cherry cabinets before the remodelThe same Riverside kitchen after a cream shaker cabinet replacementBeforeAfter

Drag the handle across. The same room, same camera position, before demolition and after completion.

We show you comparable work on homes like yours before anything is signed, so you are judging the finish rather than the photography.

Request a Free Estimate

Slope, Pans and Drains

Floor gradient is essential. Without consistent fall toward the drain a wet room holds standing water, the grout stays damp and the room never dries. Getting that fall right while keeping the entry flush with the hallway is the structural half of the job, and it means recessing the floor: dropping or sistering joists, or cutting the slab where the house sits on grade.

The shower pan is the essential structural component under all of it, and its design drives which glass options fit. Pans are formed on site with a sloped mortar bed and bonded membrane, or built from a pre-sloped panel matched to its drain.

Drain typeHow the floor slopesBest withNotes
Linear, at a wall or entryOne plane, one directionLarge-format tile, level and roll-in entriesFlatter, simpler, more open
Center pointFour planes to a middle pointSmaller tile and mosaicLower cost, more cuts and grout

Wet Room Versus Curbless Shower

Most people who call asking for a wet room actually want a curbless shower. The difference is how much of the room gets wet.

 Wet roomCurbless walk-in shower
Waterproofed areaEntire room, floor and wallsShower zone plus a margin
Rest of the roomGets dampStays dry
Best forSmall baths where an enclosure wastes spaceMost bathrooms wanting a level entry
Typical market rangeRoughly $10,000 to $30,000Roughly $6,000 to $10,000

If you want a level entry for mobility rather than looks, read our page on accessible and aging-in-place bathroom remodeling first.

Glass Panels, Heated Floors and Steam

A fully open wet room is the cleanest look, with no track to scrub, but overspray reaches the towels, the paper and the vanity. One fixed frameless glass splash panel, door-free, solves most of that while keeping the open feel and level floor.

Radiant heating suits a wet room, since tile is compatible with heating systems and a warm floor dries it faster. Electric mats go under the tile and above the waterproofing, never through it. Steam changes the build, needing a sealed, sloped ceiling, a vapor-tight enclosure and a rated door, so decide before the walls close.

Ventilation for a Room That Gets Wet Everywhere

This is where wet rooms are most often done badly. A normal fan is sized for a contained shower. A wet room puts moisture on every surface, so the fan is sized for the volume of the room, ducted in a short run outside rather than an attic, and run on a timer or humidity sensor. Riverside helps, since a semi-arid climate with 9.39 inches of rain a year and an August mean near 79.8 F dries a bathroom faster than a coastal market would.

The Two Real Downsides, Said Plainly

First, everything in the room gets damp. Not soaked, damp. Towels, paper, the vanity, the underside of a wall cabinet. People who live with wet rooms keep storage outside the splash zone. It suits some households and irritates others, so know which you are before building one.

Second, a failed membrane is an expensive repair. Water past waterproofing does not announce itself. It travels along framing, and by the time it shows on a ceiling the fix means taking floor and walls back to studs, across the whole room rather than one stall.

Neither is an argument against a wet room. Both are arguments for a licensed contractor who details the membrane properly, flood tests before tiling and stands behind the work in writing.

What a Wet Room Conversion Costs in Riverside

Wet room conversions commonly run roughly $10,000 to $30,000. Treat that as directional rather than firm: the format is less standardized than a straight shower remodel and the spread is wide. A curbless walk-in shower runs about $6,000 to $10,000, a tiled walk-in roughly $3,500 to $15,000.

What drives your number: the foundation, since recessing a slab costs more than dropping framing; room size, because demolition, plumbing and waterproofing are largely fixed costs, so small bathrooms cost more per square foot; whether the drain moves; and tile format, with porcelain slab or stone walls adding roughly $5,000 to $20,000. A heated floor adds about $1,500 to $4,000, steam roughly $4,000 to $15,000. Directional figures, not a quote.

StageWhat happensTypical time
PermitsPulled by us where plumbing or framing changesCity review
Structure and rough-inFloor recessed, drain and valves set4 to 8 days
Pan and waterproofingSlope formed, membrane applied and banded3 to 5 days
Flood testDrain plugged, floor filled and held, documented24 hours
Tile and groutWalls and floor set, grouted, sealed5 to 10 days
Glass and finishPanel, valves, heads, vanity, walkthrough3 to 5 days

Areas We Serve

We convert wet rooms across the 951 area code and the 92501 to 92509 ZIP band: Downtown, the Wood Streets, Eastside, Northside, Canyon Crest, Orangecrest and La Sierra. The hillside and newer-tract side of the city brings most of the full wet room work, while the older core more often wants a level entry in a small bathroom. Crews run the 91, the 60 and the 215, and we take projects in Diamond Bar, Chino Hills and Walnut. We also cover Victorville and the Victor Valley.

Why Homeowners Trust Riverside Kitchen & Bath Remodeling With Waterproofing

We install complete manufacturer-matched waterproofing systems rather than mixing components, band every corner and flood test before tile goes down. We are licensed in California, carry general liability insurance, pull the permits, and document the test so you have proof the pan held.

FAQ

Frequently Asked Questions

How much does a wet room conversion cost in Riverside?

Most run roughly $10,000 to $30,000, and we treat that as a directional market range rather than a fixed figure. Room size, foundation type, drain relocation and tile format are what move it.

How long does a wet room take to build?

Usually three to five weeks from demolition to walkthrough, plus permit review. The flood test alone takes a full day and is not worth rushing.

Do I need a permit?

Yes in nearly every case, since the work moves plumbing, alters electrical and often changes framing to recess the floor. We pull City of Riverside permits and schedule the inspections.

What happens if the waterproofing fails?

Water tracks into framing and shows up late, and the repair usually means taking the room back to studs. That is why the membrane detail, the drain connection and the flood test matter more than any finish choice.

Wet room or curbless shower?

If you want a level entry but want the rest of the room to stay dry, a curbless shower is the better buy at roughly $6,000 to $10,000. A wet room makes sense when the bathroom is small enough that an enclosure wastes space, or when open access is the goal.

Do you offer free estimates, and are you licensed and insured?

Yes to free in-home assessments. We are licensed in California and carry general liability coverage.

Free estimate

Book Your Wet Room Assessment

A wet room is a waterproofing project with tile on top, and it is worth hiring for the part you never see. Call (951) 589-3364. We will check your floor structure, drain and ventilation, explain how your room gets sealed, and give you an honest written price.

Licensed, insured and bonded. CSLB number on request. Call (951) 589-3364 or send the form and we will call you back.

Request a Free Estimate

Or call (951) 589-3364. Calls only, we do not receive text messages.

Call (951) 589-3364Licensed, Insured & Bonded