Vent the kitchen sink/dishwasher drain over the roof?

  • Erstellt am 2020-09-18 22:52:07

Sternchen31

2020-09-18 22:52:07
  • #1
Hello everyone,

I am not sure if the request belongs here or rather in the [Planning] section.

We will soon have the groundbreaking for our single-family house. We are building the ground floor plus the basement; due to the sloping site, the main bathroom and bedrooms are located in the basement. The ventilation of the main bathroom is done via a roof vent. On the ground floor there is a guest WC with a washbasin, which is ventilated via a second roof vent.

No roof vent is planned for the drainage of the kitchen sink/dishwasher.

Now we are wondering whether this also needs ventilation? Of course, such thoughts come up on the weekend when you can’t ask the construction company.

Can you give us some feedback?

Many thanks in advance.
 

Vicky Pedia

2020-09-19 00:06:31
  • #2
It is better to "vent". However, there are also automatic vents that can be installed in a pre-wall. The plumber can actually explain that. It is installed and does not have to go through the roof!
 

Gartenfreund

2020-09-19 05:12:22
  • #3
I wonder whether the kitchen is connected to a separate pipe (3rd wastewater pipe) or if it is not connected to one of the other two.

Take a close look at the plans or ask the architect or the sanitary engineer.
 

Pinky0301

2020-09-19 06:57:36
  • #4
From our kitchen, there is no ventilation. However, I believe the pipes are connected to the bathroom pipes, which are ventilated.
 

11ant

2020-09-19 14:09:39
  • #5
I haven’t read which floor the kitchen is on (and I’m too lazy right now to look it up in the thread history). Basically, I don’t see that such ventilation necessarily has to lead out through the roof; if it’s close to an exterior wall (the sink is often near a window), it can also go through the wall.
 

Sternchen31

2020-09-19 16:32:23
  • #6


Hello, there is definitely a third, separate wastewater line for the kitchen, for the sink, dishwasher, and a separate water connection for the side-by-side refrigerator.
 

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