Bathroom
A bathroom's use case goes beyond personal hygiene. It is a space for refreshment and self-care. This room is typically smaller than others in a household, yet it is equally important.
At a glance
75 × 75 to 90 × 120 cm
Shower
70 × 150 to 90 × 180 cm
Bathtub
40 × 40 to 46 × 91 cm
Sink
75 × 60 cm
Toilet
Dimensions
Standard sizes for the furniture and fixtures of this room.
Shower Dimensions
Typical shower dimensions range from 75x75 cm / 29.5"x29.5" to 90x120 cm / 35.4"x47.2", with options for standard or custom sizes based on the bathroom layout.
Bathtub Dimensions
The range between minimal and spacious bathtub dimensions is roughly 70x150 cm / 27.6"x59.1" to 90x180 cm / 35.4"x70.9". Different bathtub typologies include free-standing, corner bathtubs, Jacuzzi, and classic bathtubs.
Sink Dimensions
Sink dimensions and typologies vary widely:
Countertop sink sizes range between 40x40 cm / 15.7"x15.7" and 46x91 cm / 18.1"x35.8".
Wall-mounted sinks range between 25x40 cm / 9.8"x15.7" and 35x60 cm / 13.8"x23.6".
Corner sinks range between 45x45 cm / 17.7"x17.7" and 60x60 cm / 23.6"x23.6".
Toilet Dimensions
A Monoblock toilet size is roughly 75x60 cm / 29.5"x23.6". A floating toilet size is approximately 35x50 cm / 13.8"x19.7", with a basin installed in the wall behind it that ranges between 7-20 cm / 2.8"-7.9". Both types of toilets must be coordinated carefully with the plumbing and wall structure. The toilet should always be centralized in an 80 cm / 31.5" clearance space.
Toilet Paper Holder Dimensions
The size of a toilet paper holder is between 10x12 cm / 3.9"x4.7" and 22x13 cm 8.7"x5.1".
Rules of thumb
Clearances and spacing that keep the room comfortable to use.
Bathroom Door Clearance
When designing a bathroom, it is essential to coordinate the usage space of sanitary items with the door opening:
Avoid conflict between the door and the sanitary items by separating the door opening area and the sanitary item usage space.
However, a door opening may overlap with the usage space if no other option exists.
A helpful tip is implementing sliding doors to save space in compact bathrooms.
It is best to avoid placing a door directly in front of a toilet in large bathrooms.
Bathroom Window Clearance
Bathroom windows can be divided into two types: hinged and rail windows. Hinged windows require clearance for opening and closing, while rail windows are flush with the wall.
Make sure the windows are accessible and don't clash with sanitary items.
Determine the window height and glass type to ensure it will not compromise privacy.
Having at least one window in a bathroom is excellent for ventilation, yet mechanical ventilation can be installed when it is impossible.
Sanitary Usage Space
Bathrooms are commonly compact spaces, which makes every centimeter matter! That is why clearance, usage, and circulation space are key.
The minimal usage space in front of a toilet, sink, shower & bath should be a minimum of 75x75 cm / 29.5"x29.5". Usage space of different functions may overlap!
When it comes to a toilet, there should be a clear 40 cm / 15.7" from each side of it, so the toilet is centralized in an 80 cm / 31.5" clearance area.
Spacing Between Toilet Seat To Paper Holder
Small details make the difference!
Toilet roll holders are typically installed 20-30 cm / 7.9"-11.8" from the front of the toilet, a maximum of 91 cm / 35.8" from the rear wall, and about 65 cm / 25.6" high.
It's common to place the toilet paper holder on the right side of a stall, looking at its door, as most people are right-handed.
Layout examples
Proven arrangements to open in Rayon and adapt to your project.
Bathroom with Shower
Shower sizes and shapes are flexible and allow various design layouts. They are ideal for compact spaces, as their minimal size can be as small as 75x75 cm / 29.5"x29.5". Nevertheless, showers can also be spacious, with dimensions of 90x120 / 35.4"x47.2". Remember that showers can be purchased in standard sizes or customized to fit the bathroom when designing a shower layout.
Bathroom with Bathtub
Choosing between a shower and a bathtub is about personal preferences and the bathroom dimensions. The range between minimal to spacious bathtubs is roughly 70x150 cm / 27.6"x59.1" to 90x180 cm / 35.4"x70.9", and its usage space may overlap with other sanitary usage spaces - making it possible to fit a bathtub even in compact bathrooms.
Separated Toilet Bathroom
When a bathroom is approximately 7-9 m², it may create an opportunity for separating the toilet from the main space (depending on its general layout). This provides privacy and the ability to use other bathroom areas while the toilet is occupied. A helpful tip for achieving a separate toilet is implementing a sliding door; this will enable overlapping entrance and usage space and be compactly efficient.
Free Standing Bathtub Bathroom
A free-standing bathtub is commonly an esthetic-based choice recommended in spacious, luxurious bathrooms. Avoid backing a free-standing bathtub to walls and allow at least 20 cm / 7.9" around it to enable maintenance. Remember, a tap of a free-standing bathtub can be wall or floor-based, according to the facility's plumbing.
