Types of bathrooms
The design of a bathroom must account for the use of both hot and cold water, in significant quantities, for cleaning the human body. The water is also used for moving solid and liquid human waste to a sewer or septic tank. Water may be splashed on the walls and floor, and hot humid air may cause condensation on cold surfaces. From a decorating point of view the bathroom presents a challenge. Ceiling, wall and floor materials and coverings should be impervious to water and readily and easily cleaned. The use of ceramic or glass, as well as smooth plastic materials, is common in bathrooms for their ease of cleaning. Such surfaces are often cold to the touch, however, and so water-resistant bath mats or even bathroom carpets may be used on the floor to make the room more comfortable. Alternatively, the floor may be heated, possibly by strategically placing heater conduits close to the surface.
Electrical appliances, such as lights, heaters, and heated towel rails, generally need to be installed as fixtures, with permanent connections rather than plugs and sockets. This minimizes the risk of electric shock. Ground-fault circuit interruptor electrical sockets can reduce the risk of electric shock, and are required for bathroom socket installation by electrical and building codes in the United States and Canada. In some countries, such as the United Kingdom, only special sockets suitable for electric shavers are permitted in bathrooms, and are labelled as such.
On the decorating front, bathrooms may be considered by some owners to be of value only because of their utility and they may be reluctant to decorate or redecorate to "freshen" tired decor or to suit their tastes; others like to decorate their bathrooms, however.
Color is a key factor; the use of colors can alter the mood of any room and even make it look bigger. The bathroom is no different. It is sometimes suggested that bathrooms be painted in light, "cool" colors as a bathroom is a wet room and water is the predominant element. Many owners use watery elements across the bathroom, such as cloud or wave patterns across the tiles and the ceiling. Patterned wallpaper with blue or green as the predominant color is also common.
Another remodeling idea is changing the lighting, as it accentuates objects in the room. For bathrooms it is advisable to have overhead or ceiling ambience lights which could optionally be fitted with dimness regulator; one might also add spot or task lights on the mirror. Installing bathroom mirrors opposite each other can make the room appear larger when combined with the right lighting. Bathroom cabinets, vanity units, and countertops with shiny, reflective surfaces can also brighten the room.

History of bathrooms

Bathing
Bathroom POD
Bathtub
Cabinet
Mirror
Shower
Sink
Toilet
Vanity unit
Washroom