SEARCH
FIND A DEALER
Before installing a steam shower, ask your contractor about code requirements, enclosure materials, generator sizing, waterproofing, component placement, and long-term maintenance. The right answers should be specific to your bathroom, your local code requirements, and the steam generator system being installed. Vague answers are a warning sign.
A steam shower is not just a regular shower with more vapor. It needs the right enclosure, the right generator size, the right electrical setup, and the right plan for managing heat and moisture. The best contractor for the job will understand those details before tile ever goes on the wall.
Table of Contents
- What should you ask before installing a steam shower?
- How should your contractor handle building codes and permits?
- What materials work best in a steam shower?
- Where should the steam generator be installed?
- How should the steam shower be sealed and waterproofed?
- Where should the steamhead, control, and bench go?
- How should the steam generator be sized?
- What maintenance should be planned before installation?
- Frequently Asked Questions
What should you ask before installing a steam shower?
You should ask your contractor six main questions before installing a steam shower: what code requirements apply, what materials are best, where the generator should go, how the enclosure will be sealed, where each component will be placed, and how maintenance will work after installation.
Those questions help you find out whether your contractor understands steam, not just tile and plumbing. A regular shower is designed to manage water. A steam shower has to manage water, vapor, heat, and condensation.
A good contractor should be able to explain:
- which trades are involved
- what the local permitting process may require
- how the enclosure will contain steam
- how the generator will be sized
- where the generator, steamhead, and control will go
- how the system will be accessed for service
The risky answer is, “We install showers all the time.” That may be true, but steam showers have their own requirements.
How should your contractor handle building codes and permits?
Your contractor should confirm local plumbing, electrical, mechanical, and building code requirements before work begins. Steam shower installation may involve permitting, inspections, dedicated electrical service, approved lighting, proper ventilation, and code-compliant plumbing connections.
Code requirements vary by city, county, and state. The safest answer is not a guess. The safest answer is a plan to verify requirements with the local building department and the appropriate licensed trades.
A steam shower may require:
- a dedicated electrical circuit for the steam generator
- proper water supply and drain connections
- vapor-rated or approved lighting in the steam enclosure
- safe access to the generator for service
- compliance with local bathroom ventilation requirements
- approved materials behind the tile or finished surface
A contractor does not need to recite every code from memory. A contractor does need to know where steam changes the requirements.
| Ask this | Good answer | Risky answer |
|---|---|---|
| “What permits will this require?” | “We’ll verify local requirements before work begins and coordinate with the electrician and plumber.” | “You probably don’t need permits.” |
| “Who handles the electrical work?” | “A licensed electrician will size and install the dedicated circuit for the specific generator model.” | “We can use the nearby bathroom circuit.” |
| “Does steam change the lighting requirements?” | “Yes, lighting inside the enclosure must be appropriate for a wet, steamy environment.” | “Any shower light should be fine.” |
What materials work best in a steam shower?
Ceramic and porcelain tile usually work well in steam showers because they hold heat better than many porous materials. Natural stone, marble, shale, concrete, and glass block can be beautiful, but they may release heat faster and require a larger steam generator.
Material choice affects comfort and generator sizing. A porous or heat-absorbing material can make the steam room harder to heat and slower to feel comfortable. That does not mean those materials are off limits. It means the generator must be sized with those materials in mind.
A contractor should ask what the enclosure will be made of before finalizing the generator. The same shower dimensions can require different generator sizes depending on wall material, ceiling height, exterior walls, windows, and other design details.
Good contractor answer:
“The material affects sizing. If you want natural stone, we need to account for heat loss when sizing the generator.”
Risky contractor answer:
“Tile is tile. The generator size only depends on length times width times height.”
That second answer misses an important part of steam shower planning. Cubic footage matters, but it is not the whole calculation.
Where should the steam generator be installed?
The steam generator should be installed indoors in an accessible, insulated location within the allowed distance from the steam shower. Common locations include a closet, vanity cabinet, heated attic, basement, or mechanical room, depending on the layout and the manufacturer’s installation requirements.
The generator should not be buried behind finished walls or placed somewhere a technician cannot reach it. Access matters. Even a well-built system needs inspection, service, and maintenance over time.
A MrSteam residential steam generator can often be installed up to 60 feet from the steam room, which gives homeowners and contractors flexibility when planning the bathroom. The exact location should still be chosen carefully.
A good generator location has:
- indoor protection from freezing
- access for service
- enough space around the unit
- proper water, drain, and electrical connections
- a practical route for the steam line
- compliance with the installation manual
A risky generator location is one that looks convenient during construction but becomes impossible to access later. If a contractor says, “We can tuck it behind the wall and close it up,” that is a problem. The generator needs to be reachable.
How should the steam shower be sealed and waterproofed?
A steam shower should be sealed with a complete waterproofing and vapor-management system designed for steam exposure. The ceiling, walls, corners, seams, benches, niches, and penetrations all need attention because steam can move into small gaps that ordinary shower water may never reach.
This is one of the easiest places for a steam shower project to go wrong. A standard shower waterproofing approach may not be enough for a steam enclosure. Steam is vapor. It behaves differently than liquid water running down tile.
Your contractor should be able to explain the full moisture plan, including:
- the waterproofing membrane or board system
- how corners and seams will be treated
- how benches and shelves will be protected
- how penetrations for controls, fixtures, and steamheads will be sealed
- whether the ceiling needs a slope
- how glass, doors, and windows will be sealed
A steam shower ceiling often needs special planning because condensation can collect overhead. Some ceiling materials and tile layouts may require a slope to reduce dripping. Smaller tiles with many grout lines can behave differently than larger slabs or solid surfaces.
| Ask this | Good answer | Risky answer |
|---|---|---|
| “Is standard shower waterproofing enough?” | “Steam needs a vapor-conscious waterproofing plan, not just ordinary water protection.” | “We waterproof every shower the same way.” |
| “How will you seal corners and benches?” | “We’ll use the specified membrane or board system and reinforce seams, corners, and horizontal surfaces.” | “Grout and caulk will handle it.” |
| “Does the ceiling need special treatment?” | “We’ll decide based on ceiling material, tile layout, and condensation behavior.” | “The ceiling does not matter much.” |
Grout is not a waterproofing plan. Caulk is not a vapor-management plan. Those details belong in the finish layer, not the whole system.
Where should the steamhead, control, and bench go?
The steamhead, control, and bench should be planned together so the steam shower is comfortable, safe, and easy to use. The steamhead should be placed away from direct contact with the bather, and the control should be easy to reach from the seating area.
Component placement changes the daily experience. A steam shower can be technically functional and still annoying to use if the control is across the room, the bench is in the wrong place, or the steamhead points toward someone’s legs.
The steamhead should generally be installed low on the wall and away from the main seating position. Steam is hot when it leaves the steamhead. The bather should not sit or stand in the direct steam emission path.
The control should be placed where it can read and manage the experience properly. In many layouts, that means installing the control inside the steam room near the bench. Some controls can be installed outside the steam room when paired with the right temperature-sensing setup.
Good contractor answer:
“We’ll place the steamhead away from the bench, put the control where it can be reached comfortably, and follow the installation manual for height and clearance.”
Risky contractor answer:
“We’ll put everything wherever it looks best.”
Looks matter. Placement matters more.
How should the steam generator be sized?
The steam generator should be sized based on the shower’s adjusted volume, not just its basic dimensions. Length, width, height, wall material, ceiling height, exterior walls, glass, and stone can all affect the correct generator size.
A generator that is too small may struggle to heat the room properly. A generator that is larger than needed may cost more than the project requires. The goal is the right size for the enclosure.
The basic starting point is simple: measure the shower’s length, width, and height. The next step is adjusting for the real conditions of the room.
A contractor should account for:
- total cubic feet
- wall and ceiling materials
- natural stone or other porous surfaces
- glass block or large glass areas
- exterior walls
- ceiling height
- any unusual layout details
VirtualSpa can help homeowners and contractors estimate the right steam generator size based on the shower dimensions and material choices. It is a planning tool, not a replacement for professional installation review, but it gives the conversation a much better starting point.
Good contractor answer:
“We’ll calculate the adjusted cubic footage and check the generator size against the actual materials and layout.”
Risky contractor answer:
“This model is probably fine for most bathrooms.”
“Probably fine” is not how a steam generator should be selected.
What maintenance should be planned before installation?
Steam shower maintenance should be planned before installation because access, flushing, water quality, and service space affect long-term performance. A contractor should explain how the generator will be accessed, how the system will be flushed, and what maintenance options are available.
Maintenance is easier when it is designed into the project. It is harder when the generator is hidden, the drain connection was not considered, or the homeowner finds out after installation that routine care is inconvenient.
A maintenance plan should cover:
- access to the generator
- flushing the generator
- checking controls and connections
- cleaning visible fixtures according to care instructions
- water quality considerations
- service access if a technician is needed
An automatic flushing system, such as AutoFlush, can help by flushing the generator after steam bathing. That helps remove impurities from the tank and supports long-term performance.
Good contractor answer:
“We’ll keep the generator accessible, plan the drain connection correctly, and discuss whether AutoFlush makes sense for your system.”
Risky contractor answer:
“Steam generators do not really need maintenance.”
Every system benefits from the right care. The best time to make that care practical is before installation.
Final Takeaway
The best steam shower installation starts with specific answers. A contractor should be able to explain how the system will meet local requirements, how the enclosure will contain vapor, how the generator will be sized, and how each component will be placed and serviced.
A steam shower is a daily comfort product, but it is also a technical system. Planning protects the experience.
Before the first wall is opened, use VirtualSpa to start sizing your steam shower and explore MrSteam Steam Generator Systems that fit your space.
Frequently Asked Questions
What is the first thing to ask before installing a steam shower?
The first thing to ask is whether your bathroom can support a properly enclosed steam shower with the required plumbing, electrical, waterproofing, and ventilation plan. A contractor should inspect the existing space before giving a confident answer.
Can any shower become a steam shower?
Many showers can be converted, but not every shower is ready for steam without changes. A steam shower needs a sealed enclosure, suitable materials, a properly sized generator, and the right electrical and plumbing connections.
Does a steam shower need a special door?
Yes, a steam shower needs a door or enclosure designed to contain steam. Gaps that are acceptable in a normal shower can let steam escape and reduce comfort.
Does a steam shower need a sloped ceiling?
Some steam showers need a sloped ceiling to help manage condensation, but the need depends on the ceiling material, tile layout, and enclosure design. Your contractor should evaluate the ceiling before installation.
Where should the steam generator go?
The steam generator should go in an indoor, accessible, insulated location within the manufacturer’s allowed distance from the steam room. Closets, cabinets, basements, heated attics, and mechanical rooms are common options.
How do I know what size steam generator I need?
The generator size depends on the shower’s adjusted volume. Dimensions matter, but materials, glass, exterior walls, and ceiling height matter too. VirtualSpa can help estimate the right size before final review with a professional.
What is a risky contractor answer about steam showers?
A risky contractor answer is vague, dismissive, or based only on standard shower experience. Be cautious if a contractor says waterproofing, sizing, electrical work, or component placement “should be fine” without checking the specific requirements.
What products should I consider when planning a steam shower?
Start with the steam generator system, then plan the control, steamhead, enclosure, and maintenance options. VirtualSpa can help with early sizing, and a MrSteam Steam Generator System can be selected based on the final room design.
>> Learn more about insulation and other steam room construction tips.
5. How should the various steam-related components (e.g., steam generator, shower head, steam heads, control, etc.) be laid out?
To avoid extra work and expenses down the road, consider planning how each component in your steam shower will be laid out from day one.
Deciding where to install the steam generator is very important, and, thankfully, you have many options! A MrSteam generator can be installed anywhere indoors, in an insulated environment, within 60 feet of your steam room.
>> Check out more tips for installing your steam bath generator.
Also consider the steam shower control location. For maximum convenience, install it in an area near your shower bench so you can easily reach out from where you are sitting.
Sometimes a sloped ceiling is required in a steam shower to prevent condensation from dripping on the bather. This decision is based on the type of tile or finished surface used on the shower ceiling. Smaller tiles with many grout joints may require a slight slope because they tend to drip at the edges, while solid materials, like Swanstone, do not have joints or many surface breaks.
>> See How To Design A Steam Shower Bathroom: Corey S. Klassen Explains.
6. What is trending in bathroom design?
You might not associate your plumbing contractor with a savvy knowledge of what’s “hip” in bathroom design, but he or she has to understand the latest trends to successfully plan and execute an installation. Your contractor, having installed steam showers before, is likely familiar with what is popular. Are consumers opting for rain shower or massage shower heads? Reinforced marble or acrylic wall tiles? Your contractor likely has a wealth of information. Tap into that knowledge to keep your steam shower and bathroom hip and modern.
Think of your steam shower installation in a holistic sense; every aspect is interconnected. For example, the type of tile materials you install will impact how much heat is retained in the shower, which will impact your steam generator’s required size.
>> See
7. How should I maintain my steam shower?
Maintenance is key no matter what the installation, so ask your contractor how to keep your steam shower components functioning at peak performance. He or she may recommend installation of the MrSteam AutoFlush, which automatically and electronically flushes the generator of impurities two hours after every steambath, improving performance and lengthening system life.
>> Read Why Bother with Steam Shower AutoFlush Technology.
Additional Resources For Installing Steam Showers
With these questions answered, you will be well on your way to enjoying the full health and wellness benefits of steam. In case you need additional resources for installing your steam shower, we recommend the following articles:
