Steam Shower Installation: Generator, Enclosure and Drain

Sauna Dekor Spa Solutions engineering team, Istanbul · project and press enquiries: Alican Aykaç, Managing Partner

Updated: 12 November 2026

A steam shower is a shower enclosure that can also fill with steam; a steam room is a dedicated room built only for steam. Both run at about 40–50 °C at close to 100 % relative humidity while in use, so both need a sealed, waterproofed enclosure and a steam generator outside the wet zone.

The difference is daily use. A steam shower is a shower first, used for washing most days and for steam some days. A steam room is used for longer sessions and usually has more seating and a larger volume. Our comparison of steam shower and sauna covers how they feel in use.

For a villa that wants regular steam sessions for several people, a dedicated steam room is usually the better brief.

Outside the enclosure, in a dry, ventilated and accessible place close to it: a vanity cabinet, a cupboard in the next room or a service void. The generator needs 3 connections, water, drain and power, plus a steam line to the outlet inside the shower and a service door for descaling.

Placing the generator is the first decision because it sets the routes of every pipe and cable. Too far away and the steam line loses heat; too hidden and nobody can service it. We use Condair generators and size them to the enclosure volume and its wall finishes; our steam generator page explains the selection.

Hard water shortens the generator's service interval, so the water supply and any treatment are part of the same decision.

By running to the ceiling on all sides, including a glass panel or a wall above the door, and by closing with a door designed for steam. A standard shower screen with an open top lets the steam escape into the bathroom. The 1 detail that matters most is the joint between glass, wall and ceiling.

The ceiling inside a steam shower should slope so condensation runs to the walls instead of dripping on the user. A flat ceiling in a steam enclosure drips. Door seals and the threshold are chosen so the door closes firmly without trapping water.

Lighting and any speakers inside must be rated for permanent humidity, and their housings sealed through the waterproofing.

On every surface, not only the floor and the lower walls: walls, ceiling, bench and the joints between them. A normal shower wets 1 or 2 walls for a few minutes; a steam shower wets the whole enclosure with vapour each time it runs. The waterproofing is tested with water before tiling.

Steam pushes vapour into the substrate, so the build-up behind the tile acts as a vapour barrier as well as a waterproof layer. Penetrations for the steam outlet, valves, lights and the drain each get a sealed detail. Our guide to building a steam room shows the same principle at room scale.

We give a 5-year warranty on structure and waterproofing, which is why the water test is part of every handover.

With a continuous fall to 1 drain, usually a linear drain at the wall opposite the seat, and no flat spots where water stands. The drain must take the shower flow and the condensate from the steam cycle. A raised threshold or a step-free fall decides how the floor meets the bathroom outside.

The generator's own drain line, used when it flushes, goes to a separate connection outside the enclosure. Mixing it into the shower drain without a trap or air gap is a common error.

Where the enclosure also has a rain head or body jets, the drain is sized for the largest flow. Our page on shower systems lists the fittings we install.

A dedicated circuit for the generator, sized to its rating by the electrical engineer, and a control panel inside or beside the enclosure. Controls set 2 things: temperature and run time. The generator manufacturer's manual sets the cable, protection and position of the sensor; we follow it rather than general rules.

The control panel inside the enclosure must be rated for steam. Where the owner wants control from outside, a second panel or app control is added. Lighting, aroma dosing and music are separate circuits and decisions.

Cost follows these choices more than the glass. Our article on steam room cost in the UAE sets out what changes the budget.

The enclosure is filled with steam for a full cycle while we check 4 things: the door and glass seals, condensate on the ceiling, the drain and the generator's own flush. Any leak, drip or slow drain is fixed before handover. The owner is shown descaling and cleaning routines.

Handover also includes the generator manual, the waterproofing test record and the service intervals. For our villa steam work in the emirate, see steam rooms for custom homes in Dubai.

Sauna Dekor Spa Solutions has designed, manufactured and installed steam rooms, saunas, hammams and pools since 1987: 40 years of manufacturing in Istanbul, in our own facility in İkitelli OSB, with a team of 19 and TS EN ISO 9001:2015 certification (EKOL, certificate 202025106). We have delivered 5,000+ projects in 41+ countries. We build the enclosure, waterproofing and finishes; the steam generator is made by Condair and carries its maker's certification.

We give a 24-month warranty on workmanship and manufacturing; a 24-month manufacturer's warranty on electrical and mechanical equipment; and a 5-year warranty on structure and waterproofing.