
Designing an open plan wet room for your home requires careful consideration of space and functionality. A well-designed open plan wet room can be a luxurious and practical addition to any home.
The key to a successful open plan wet room is to create a seamless transition between the shower, bath, and other wet areas. This can be achieved by using a single, level floor and minimal thresholds.
When choosing a location for your open plan wet room, consider the natural light and ventilation in your home. A south-facing room can provide plenty of natural light, while a room with a window on the opposite side can help to ventilate the space.
By incorporating a wet room into your home, you can create a beautiful and functional space that is perfect for relaxation and rejuvenation.
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Benefits and Considerations
An open plan wet room can create a feeling of spaciousness and luxuriousness, especially in smaller bathrooms. This layout provides a space that’s easier to clean due to the lack of doors and thresholds.
Barrier-free entry is a significant advantage of open plan wet rooms, making it easier for people with limited mobility, wheelchair users, or those who plan to age in place to access the shower area.
The design of an open plan wet room is ideal for situations where you need assistance with bathing, such as elderly clients who require nurses to help with daily tasks.
Installing a curbless shower design can be challenging, especially in existing houses with slab-on-grade foundations or second-floor bathrooms. The structure and finish layers of your flooring will dictate if you can cut into it and obtain a sufficient slope.
A curbless shower design isn't always possible from a structural standpoint, but you can build a small curb between the 'wet' and 'dry' areas to contain the water and prevent seepage under the vanity.
Ensuring the entire bathroom is fully waterproofed and sealed, also known as "tanking", is crucial to prevent moisture from seeping through and damaging the underlying surfaces.
A wet room-style bathroom can be wetter than a traditional bathroom, so it's essential to lay out the bathroom in a way that keeps the wet areas together, such as having the tub and shower share one space.
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Improper installation of a wet room can lead to common issues like drainage problems and excess water spills, which can be caused by inexperienced installers.
Slippery floors can be a concern in wet rooms, but you can choose tiles with a good score on the pendulum test to decrease the slipperiness, especially for individuals with mobility issues.
A thorough waterproofing process, known as tanking, can prevent excess water from damaging the structure of the building, especially in older properties or smaller wet rooms.
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Design and Layout
An open plan wet room can be built without a shower door or even a shower screen, creating a large, open shower space without any barriers to entry or exit.
This open layout isn't just beneficial for showering, it's also easier to move around in. The lack of a door, shower tray or screen can create an open bathroom space that has fewer trip hazards.
Installation Considerations

Installing a curbless shower design can be challenging, especially if you're renovating an existing house. It's essential to consider the structural perspective and foundation of your home.
The foundation and finish layers of your flooring will dictate if you can cut into it and obtain a sufficient slope. A slab-on-grade foundation and a few layers of flooring above the slab might not provide enough room for a curbless shower.
If a curbless shower design isn't possible, a small curb between the "wet" and "dry" areas can help contain the water and prevent it from seeping under your vanity. This is a viable alternative that doesn't compromise the modern look.
To ensure proper drainage, the entire bathroom must be fully waterproofed and sealed, a process often referred to as "tanking." This involves installing a waterproof membrane between the tiles and the underlying surfaces.
Improper installation can lead to common issues such as drainage problems and excess water spills. This highlights the importance of hiring a skilled professional for the job.
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Slippery floors can be a concern in wetrooms, especially for individuals with mobility issues. Choosing tiles with a good score on the pendulum test can help decrease the slipperiness of the floor surface.
Proper drainage installation is crucial in wetrooms, as they have no distinction between the showering area and the rest of the room. Poor drainage can lead to pooling water and increase the risk of slipping.
Layout
Open layouts in wet rooms can be a game-changer for bathroom design. Without a shower door or screen, you create a large, open shower space that's easy to move around.
This layout is not just beneficial for showering, it also creates an open bathroom space with fewer trip hazards. The lack of doors, shower trays, or screens makes it a breeze to clean.
Open layouts can create a feeling of spaciousness, especially in smaller bathrooms. They can make your bathroom feel like a steam room, with a luxurious and airy vibe.

Having an open layout also provides easier access to shower areas for people with limited mobility, wheelchair users, or those who plan to age in place. It's a thoughtful design consideration that can make a big difference in daily life.
By removing the need for a bulky bath or shower enclosure, wet rooms can save valuable space in your bathroom. They're perfect for small spaces, and can even make your bathroom feel bigger.
Lighting
Lighting is a crucial aspect of any bathroom design, and it's essential to get it right to create a functional and relaxing space.
Downlights can provide good overall light, making it easy to perform tasks like shaving and putting on make-up.
A flexible bathroom lighting plan will also ensure the room has a relaxing ambiance for showering.
Task lighting around mirrors will make precision tasks easy, which is especially important in a wet room.
Wet room lighting must be suitable for the zone of the room it's in, determined by its proximity to a water source, so it's crucial to understand bathroom lighting zones.
Always work with a registered electrician to ensure your lighting plan is safe and functional.
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Dressing Windows
Natural light is essential to keep your wet room feeling bright and spacious. Natural light is a must to ensure that your wet room stays bright and spacious feeling.
Dressing your windows is crucial to regulate light and privacy in a humid space. Shutters are a smart choice and will regulate light and privacy effectively.
If you have windows in your wet room, choose a shutter that's specially made to tolerate water without warping. Window likely to get splashed? Choose a shutter that’s specially made to tolerate water without warping.
Roman shades are another lovely option for dressing your windows. Roman shades are another lovely option and if you prefer blinds, louvred versions are also neat and effective.
Coated fabric blinds made to cope with the condensation in the room are also a great choice.
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European-Style Bathroom
European-style bathrooms are a great way to create a luxurious and spa-like atmosphere in your home. They combine the bathtub and shower into one ample space, with no distinct barrier between the shower and the rest of the bathroom floor.
This design is perfect for those who value elegance and functionality. Wet rooms, as they're also known, feature waterproof walls and flooring, making them a great option for small spaces.
In a European-style wet bathroom, the shower and tub are often in one enclosed room with no distinguishable curb between the two areas. This creates a seamless and open concept that's both stylish and practical.
You can choose from a variety of materials to create a unique aesthetic, such as marble slabs and tiles that exude high-end elegance. The client's desired aesthetic in a European-style wet bathroom, like a luxurious, spa-like atmosphere, greatly influences the material choices.
With a European-style wet bathroom, you can experiment with different lighting and materials to achieve your desired aesthetic. You can choose a cozy spa-like atmosphere with wood and soft ambient lighting, or a sleek and modern look with steel and glass.
These modern bathrooms exude simplicity and contemporary elegance from floor-to-ceiling tiling to minimalist fixtures. They're a great way to add a "wow" factor to your property and increase its value.
In fact, investing in a wetroom can increase the value of your property, especially for luxury homes. Its sleek design and functionality make it appealing to potential buyers, including families and individuals with mobility issues.
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Wetrooms are also a space-saving solution for smaller properties. They offer all the practicality of a traditional shower space without bulky fittings and fixtures. You can even utilize unique architectural features, such as a sloping ceiling, by installing an open-plan wetroom with a glass screen.
This option is impossible with a standard shower enclosure, making wetrooms a space-saving game changer.
Pros and Cons
An open plan wet room can have its advantages. One of the main benefits is the open and spacious feel it provides.
This design choice can also make the material and design choices shine. Imagine a bathroom that feels more like a spa than a functional space.
In terms of practicality, wet room bathrooms are easier to clean than traditional bathrooms. This is because there are fewer crevices for bacteria and mold to accumulate.
Here are some of the key pros of an open plan wet room:
- Open and spacious feel.
- The design and material choices can shine.
- Easier to clean.
- Greater accessibility for people with limited mobility.
Pros and Cons
Wet room bathrooms can offer a lot of benefits, but it's essential to consider both the pros and cons.

One of the biggest advantages of wet room bathrooms is the open and spacious feel they provide. This design can make a bathroom feel larger than it actually is, which can be especially beneficial in smaller spaces.
The design and material choices in wet room bathrooms can also shine, making them a stylish option. Sleek and modern designs are a hallmark of these types of bathrooms.
Wet room bathrooms can be easier to clean than traditional bathrooms, as there are fewer crevices for bacteria and mold to accumulate. This is especially true when compared to bathrooms with curtains or enclosures.
Greater accessibility for people with limited mobility is another benefit of wet room bathrooms. Without the need for a defined shower stall or bathtub enclosure, these spaces can be more accommodating for those with mobility issues.
Here are some of the key benefits of wet room bathrooms:
- Open and spacious feel
- Sleek and modern design
- Easier to clean
- Greater accessibility for people with limited mobility
However, wet room bathrooms also have some drawbacks to consider.
Are Expensive?

Wet rooms are indeed more expensive than regular bathrooms, with costs ranging from £7,000 for a basic design to £40,000 or more for a large or luxurious wet room in the UK.
A basic wet room design in the UK can cost around £7,000, while a large or luxurious one can exceed £40,000.
In the US, the starting cost for a wet room is around $20,000.
Good wet room ideas tend to be 20 to 30 per cent more expensive than an equivalent non-wet room bathroom remodel cost.
A wet room can add 20% more value to your home compared to a regular bathroom reno, making it a worthwhile investment for some homeowners.
Maintenance and Upkeep
Wet rooms are much easier to clean than traditional bathroom spaces because there's no shower tray or door to trap dirt.
The open layout of a wet room naturally makes it easier to clean since there are fewer nooks to address.
Selecting wall-mounted options like a vanity and toilet can make cleaning even less of a hassle, as they're much easier to sweep and mop under and behind.
Maintenance

Wet rooms are much easier to clean than traditional bathroom spaces because they have no shower tray or door to trap dirt.
The open layout of a wet room naturally makes it easier to clean since there are fewer nooks to address.
A wall-mounted vanity and toilet are space-saving options that are also much easier to sweep and mop under and behind.
Floor-mounted options can still be easy to clean if there are at least several inches of space between the toilet and the wall and the bottom of the vanity and the floor, allowing for proper cleaning and mopping up of standing water.
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Heating
Heating is a crucial aspect of wet room maintenance. You can extend an existing radiator system to add an underfloor heating circuit.
In a tight space, underfloor heating is ideal. The pipes can be laid between the timber joists, and insulation beneath will help the system work efficiently.
Electric underfloor heating mats are a great alternative. They don't increase the floor level significantly, making them easier to install.
They are also relatively inexpensive to buy, but keep in mind that they will cost more to run than a water-based system.
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Flooring and Drainage
For a wet room, the type of flooring is crucial to prevent slipping. Large-format tiles are not ideal, especially in areas closer to the shower and splash zones, as they can be slippery. Small-scale tile, on the other hand, requires more grout and adds traction to the floor, making it a safer choice.
Porcelain and natural stone tiles in small mosaics or 6”x 6” or smaller tiles in a honed finish are excellent options. These materials are less likely to be slippery and can help maintain the open layout of the wet room.
A well-designed wet room also requires careful consideration of drainage. A drainpipe, typically 10cm in diameter, needs a slope to ensure proper drainage. This slope should be calculated to direct water to the nearest drainage point, and a floor covering that prevents water permeation is essential.
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Flooring Fundamentals
When planning a wet room, it's essential to consider the floor construction and slope to ensure water drains properly. A slope to a plug hole, trap, and drain below the lowest point in the space is necessary to maintain a streamlined look.
The floor sub-structure needs to be stiffened to prevent leakage, which means ensuring the floor finish is stable. This is crucial in a wet room where water is present.
Manufactured board systems, such as those supplied by Wedi, come with specialist waterproof membranes, which are ideal for wet rooms. These systems can help prevent water from permeating the floor.
Pre-sloped panels, like Impey Aqua-Dec, can be placed below the floor finish to ensure proper drainage. These panels can be a convenient option for wet room flooring.
In a wet room, small tiles with more grout are better suited for the floor area, as they provide more traction and help prevent slipping.
Ensure Good Drainage
A drainpipe of 10cm in diameter needs a slope to ensure proper drainage in a wet room, so if the joists run in the same direction as where you want to run your drain, the pipe can be fitted between joists within the existing depth of the floor.
To avoid issues with floor structure and construction, it's essential to sort out the floor structure before running pipes. You'll need to speak to a structural engineer and an architect or designer regarding the building's structure and best arrangement of the space.
Waste pipes need to be beneath the floor, so they'll be concealed as a matter of course. This is a great advantage of wet room design.
If you need to run your pipes across the direction of the joists, they will go beneath them, which would mean below the ceiling of the floor underneath and may require a new lowered false ceiling, or above the joists, requiring raising the floor.
Proper drainage is crucial in a wet room, so it's essential to ensure the floor is sloped and sealed correctly. This will prevent water from escaping and causing leaks in your home.
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Sanitaryware and Decor
Choosing the right sanitaryware for your open plan wet room is crucial. Go for smaller dimensions, but not so small that it's hard to use.
For the shower area, aim for a minimum of 80cm x 80cm to avoid a claustrophobic experience. This size ensures a comfortable showering space.
A compact wall-hung loo with a concealed cistern is a great option, as it removes visual clutter and keeps the floor visible.
To decorate your wet room, a light, bright palette can help make the space feel larger. However, be mindful of using too much white, which can make the room feel cold.
European Bathroom Material Presentation
European Bathroom Material Presentation is a game-changer for homeowners.
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In this style of presentation, the focus is on showcasing the materials and fixtures in a way that's both functional and visually appealing.
This approach often features European-style wet bathroom materials, carefully selected to create a cohesive and luxurious look.
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How to Decorate
A light, bright palette will help reflect light and make the wet room feel larger.
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Avoid going overboard with white, as it can make the room feel cold or clinical. Consider warmer, earthy tile colors instead.
Patterned wall tiles or colorful accessories can bring warmth and interest to the space.
The odd house plant looks great in a wet room and will thrive well in the warm, humid environment.
Demister mirrors will help make the wet room feel bigger, especially if you sit them flush with any tiling to create the illusion of depth.
A gentle texture on floor tiles is essential for safety, giving some grip underfoot.
Large format tiles can work well in a small wet room, leading to fewer lines of grout that can create a grid-like pattern making the space feel smaller.
Soft stone effect tiles can achieve a chic, bright, and airy space, perfect for a wet room.
Choosing Sanitaryware
Choosing the right sanitaryware for your wet room is crucial for a functional and comfortable space.
Look for sanitaryware with smaller dimensions, but not so small that it's hard to use. A compact wall-hung loo with a concealed cistern can help remove visual clutter and make the floor feel more spacious.
For a shower area, aim for a space no smaller than 80cm x 80cm to avoid a claustrophobic experience. This size ensures a comfortable showering experience, perfect for a luxurious bathroom look.
If you're using glass screens, make sure they have a motif, border, or frosting to ensure visibility. This adds an extra layer of design to your wet room bathroom.
Walk-in Shower vs Traditional Shower
A walk-in shower is a great option for those who want a traditional shower experience, but with a more open concept. It typically has a separate area for the shower and drainage system.
One of the main advantages of a walk-in shower is that it's easy to clean, but it can also be slippery, which may be a concern for families with young children.
Wet rooms, on the other hand, are completely open plan spaces where water can flow freely towards the drain. This design helps to create a seamless and open concept.
Wet rooms are ideal for those who value elegance and functionality, and they can make a space look and feel bigger. The open floor plan of a wet room makes it a preferred choice for all-inclusive designs.
However, wet rooms can be a bit more challenging to design, especially when it comes to plumbing and waterproofing. It's essential to use good quality materials and choose the right type of furniture to avoid mistakes.
Some people may be concerned about the pros and cons of wet rooms, but they can be a great option for most homes, regardless of size. Wet rooms are equally suitable for smaller and larger spaces, and they can be a great way to bring your favorite bathroom ideas to life.
A popular design idea for wet rooms is to include a tub and a shower in the same space, but this can be a bit more complicated due to the plumbing. It's essential to consider the waterproofing of the entire wet room and use professional help from interior designers or architects to avoid mistakes.
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Good Ideas
European-style wet bathroom designs are a great way to create a luxurious and spa-like feel in a small space. They're perfect for tight spaces where you can't fit a separate tub and shower.
Open-concept bathrooms are a great idea, especially for people with limited mobility or those who plan to age in place. Barrier-free entry makes it easier to clean and provides easier access to shower areas.
Wet rooms are a popular choice in Europe where space is at a premium. They're ideal for creating a luxurious spa-like feel in a small space.
Large format tiles can work well in a small wet room, leading to fewer lines of grout that can create a grid-like pattern. Small patches of mosaic tiling can also be very effective, especially for providing splashback to a sink or feature.
Do You Need Permission?
In the UK, a new wet room probably won't need planning permission. You'll need to check with your local authorities for specific requirements.
Installing a new loo, shower, or basin and changing electrics near a shower are subject to building regulations. This means you'll need to get approval before making these changes.
Replacing existing plumbing work is not subject to building regulations approval, unless it's near to, or involves electrics.
Frequently Asked Questions
What is the downside of a wetroom?
Wetrooms can feel colder than traditional bathrooms due to heat dissipation, and they can also be slippery without proper precautions.
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