What’s So Great About Sunken Bathrooms?
Have you encountered such a problem in the bathroom of your home?
If you want to change the layout, the location of the downpipe can not be changed.
If the sound insulation is not done well, or even not done sound insulation, when someone goes to the bathroom upstairs will wake you up.
If the waterproofing is not done well, your room will have water leakage.
A sunken bathroom can help you solve these problems.
What is a sunken bathroom?
A bathroom that is lower than the normal floor (generally descending 30cm-45cm) is called a sunken bathroom, also called a caisson bathroom, and belongs to the “same floor drainage”.
To put it bluntly.
The traditional bathroom has compartment drainage. The neighbor’s drain is on the ceiling of your house. A sunken bathroom has co-located drainage. Your own drain is on your own floor, and then backfilled with material.
Is it better than a normal bathroom?
In terms of aesthetics
The pipes in ordinary bathrooms are on the ceiling of the next floor, which is very unattractive.
The sunken bathroom avoids the disadvantage that the pipes are all exposed and smashed on the ceiling, and the pipes are collected under the floor.
However, I think: the sunken type will be filled and the ordinary one will be suspended, so there is not much difference in terms of aesthetics.
In terms of practicality
See the illustration
This picture is already obvious
You can see the advantages of a sunken bathroom
- Better water resistance (we’ll get to that in a moment)
- Because it has no noise, so it you quiet sleeping environment.
- Because it is same level drainage, you can arrange your bathroom as you like without worrying about drainage at all.
In terms of bathroom waterproofing
For the waterproofing of ordinary bathroom, except for the main drainage pipe, other pipes need to be perforated in the floor, which is easy to seep and troublesome to repair.
The waterproofing of a sunken bathroom only requires the main drainage pipe to be perforated in the floor. When the basic waterproofing work is done, then fill and lay cement slurry, so that the waterproofing performance is very good.
In terms of cost
A sunken bathroom is more expensive in terms of renovation costs.
This is because the construction of co-layered drainage is more complicated than compartmentalized drainage. You have to backfill after laying the pipes, and the cost of this part is quite substantial.
Backfilling used to be done with construction debris. But there are a lot of sharp edges in the construction debris, which will damage the utility of the water pipe. Don’t save money on this part.
Use ceramic pellets for backfill, so that the water absorption is good and light. This will not damage the water pipes and the waterproofing layer.
About the sunken bathroom
Can an ordinary bathroom be converted into a sunken one?
No! Only the developer can decide whether a sunken bathroom can be made.
Will the sunken bathroom affect the floor height after backfilling?
It will definitely affect a little, but not significantly. If the developer builds the house with a sunken bathroom in mind, then there will be a difference in the height of the floor in the first place.
A normal bathroom will cover the pipes for aesthetic reasons, and in this way, the floor height will be affected. Because the sunken bathroom backfill the pipes, the ceiling will only play a decorative role.
There is basically no impact on the height of the floor.
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