Prefabricated Toilet Units: How Many Types Are There and How to Look After Them
Published 6 Feb 2024 · Updated 1 Sept 2026 · 3 min read

What kinds of toilet units and prefabricated toilets are there?

Toilet units and prefabricated toilet units are made from various materials such as steel, fibreglass and plastic. They are compact, lightweight units that are easy to move, so they suit limited spaces or places that need toilets temporarily or permanently — for example, construction sites, festivals, trade shows, remote areas without facilities, or toilets for visitors.
Toilet units and prefabricated toilet units contain all the fittings needed for a fully functioning toilet, such as a toilet bowl, wash basin, shower, mirror and ventilation. The fittings in these units can be changed to suit your needs and use, and there are many types to choose from, depending on the size of the unit, the materials it is made from and the fittings inside.
3 types of prefabricated toilet unit to know before you buy
- Prefabricated toilet unit model KT, 0.83 x 1.08 x 2.33 metres
A single toilet unit with 1 room — affordable and compact. It is available with or without a tank. Where there is a tank, it is a tall water tank or a small tank, because space is limited. Inside, this type of unit has only a toilet — a flush toilet or squat toilet — or a shower fitted to make it a shower room. Its advantages are that it is easy to install, easy to move, and comes with plumbing and electrical systems.
This type of toilet unit is found on construction sites, where there are not many users and the focus is on function rather than extra fittings. The structure of this type of prefabricated toilet is a steel structure made from cold-rolled steel coated with zinc (Galvanized) by hot-dip galvanizing for better rust resistance. It has an attractive shape and keeps water from flowing out of the unit well. - Prefabricated toilet unit model TW, 1.90 x 1.45 x 2.70 metres
This prefabricated toilet unit is a mobile toilet unit that is very popular today, thanks to its compact size, easy installation and easy relocation. The key feature of this type is that it has 2 rooms, making it suitable for many places such as construction sites, event venues, tourist attractions and even homes. The TW prefabricated toilet unit can be divided to suit the user's needs: 1 shower room and 1 toilet room, or 2 toilet rooms. Inside, the unit has a full set of sanitary ware — water tank, flush toilet, wash basin and shower — and a water heater can be added.
This model can also be modified to make it even more convenient to use. It is strong and durable because it is made from high-quality materials: the walls and roof are galvanised steel sheet with anti-rust paint; the floor is galvanised steel with anti-rust paint, overlaid with Viva Board and topped with anti-slip ceramic tiles or a fibreglass tray. The door has an aluminium frame, and the door leaf is the same material as the unit's walls, with PU heat insulation. Standard drainage and sanitation systems are installed, so customers can be confident the prefabricated toilet unit will have a long service life and will not break easily, whatever the weather.
The price of the TW toilet unit depends on the materials used to build it and on optional extras — for example, a unit with a waste holding tank costs more than one without. - Prefabricated toilet unit model WT, 3.0 x 3.0 x 2.69 metres
This type of prefabricated toilet unit is a standard-size toilet unit, larger than the TW model. Its key feature is that it has 3 rooms, mostly used as toilets and divided according to the customer's use — for example, separate men's and women's toilets — or specially modified as a toilet for people with disabilities or the elderly, because one room is wide enough to take a wheelchair. The WT prefabricated toilet unit is made from high-quality, hard-wearing materials. The structure is galvanised steel with a paint finish, giving a degree of rust protection. The walls and ceiling are PU Foam insulated panels that keep out heat and noise. The floor is Viva Board overlaid with a prefinished material. The unit comes with full sanitary ware: wash basin, flush toilet, shower and mirror. This model of toilet unit is often found at construction sites, industrial factories, schools, hospitals and tourist attractions where there are many different kinds of people. The starting price of the WT prefabricated toilet unit is about 135,000 THB (7,500 THB/m²).
No need to spend time building a toilet any more — simply install a toilet unit, a prefabricated toilet unit that is convenient to use, strong, durable and long-lasting. You can buy toilet units and prefabricated toilet units in a range of models from SBT Worldwide.






