Miami — Miami-Dade
A true wet room is a continuous waterproofed space with no curb, a linear drain, and tile or marble that can handle full wet exposure. Build the waterproofing first, ask for a flood test, and only then set the large-format surface over it.
Wet room installation in Miami starts with a continuous ANSI A118.10 waterproofing membrane across the floor and wet walls, tied into a linear drain and sloped mud bed or foam tray. There is no traditional curb. Water is managed by pitch to the drain and a sealed membrane that wraps walls, niches, and thresholds. Ask for a flood test of the entire wet zone before large-format porcelain or marble tile goes down. Sheet systems and liquid-applied membranes are both options, depending on the substrate and the design.
South Florida humidity and condo living make open wet rooms demanding. Condensation and daily shower use stress every joint, so substrate prep, membrane detailing, and a flood test all matter. Single-family homes and Miami-Dade condos both use wet rooms, and condo buildings often need HOA access and paperwork first. Finish options range from rectified large-format porcelain to natural marble for master suites where design and longevity matter most.
A wet room in a Miami condo is a building job as much as a bathroom job. Brickell, Downtown Miami, Miami Beach and Aventura are dense with high-rise condo towers. Many condo associations set work hours, require elevator reservations, and ask for sound-control underlayment under hard floors. Read the association rules before you sign anything.
After the 2021 Champlain Towers South collapse in Surfside, Florida passed SB 4-D (2022), which requires milestone structural inspections of condominium buildings three stories or taller. Ask your association whether a milestone inspection is scheduled while the wet room is being planned, so the two do not collide.
The City of Miami runs its own building department; Miami Beach, Coral Gables, Doral and Aventura are separate cities with their own; Kendall is unincorporated and goes through Miami-Dade County. Permits are issued by the city for addresses inside city limits and by the county for unincorporated areas. HOA approval is separate from the permit, so ask for both.
Air near Biscayne Bay and the ocean carries salt, and humidity stays high for most of the year. Ask for a membrane system and a shower glass setup rated for that exposure. If the project includes outside work, the Florida Building Code's High-Velocity Hurricane Zone (HVHZ) covers Miami-Dade and Broward counties. Atlantic hurricane season runs from June 1 to November 30, so plan outside work around it.
Why Choose AP STONE INC.
Ask for full ANSI A118.10 waterproofing across the floor and wet walls before any tile or marble goes down.
A linear drain needs a consistent slope to the channel. Ask how the slope is set before the tile is cut.
Ask for a flood test before any finish surface goes in, and ask for the result in writing.
Bilingual team in English and Spanish.
"Curbless wet room with a linear drain and 60x120 porcelain panels. Membrane flood-tested before tile. Looks like a spa and has stayed perfectly dry."
Andrea P.
Miami, Curbless Wet Room
"They rebuilt our open shower as a true wet room. Slope to the drain is exact, no puddling, and the marble walls are book-matched beautifully."
Robert H.
Coral Gables, Marble Wet Room
"Condo wet room in Brickell. HOA paperwork, freight, membrane, and flood test all handled. Neighbors never had a leak concern."
Sofia L.
Brickell, Condo Wet Room
The cost follows the size of the room, the drain type, the scope of the membrane, and the finish material. Marble and complex niches add labor, and a condo may add access and documentation work. We quote after measuring, so each wet room gets its own estimate.
The work follows a fixed order: demolition and substrate prep, membrane and linear drain, flood test, large-format tile or marble, then grout and sealer. Liquid membranes and thinset need cure time before the next step, so the schedule depends on those waits. Ask for the step list in writing.
Wet-area work that changes drainage, waterproofing, or layout usually needs a permit. Permits are issued by the city for addresses inside city limits and by the county for unincorporated areas. The City of Miami runs its own building department; Miami Beach, Coral Gables, Doral and Aventura are separate cities with their own; Kendall is unincorporated and goes through Miami-Dade County. Condo projects often need HOA approval as well.
Large-format porcelain with rectified edges gives thin grout lines and handles water well. Marble works too, but it needs sealing and gentle cleaning. Whatever tile you choose, the membrane under it does the waterproofing, so ask for it on the floor and the walls.
Get a free estimate for Wet Room Installation in Miami.