Ventilation/Drainage Wastewater Pipes

Hello everyone,

Question:
In our new building, we have three drains in different corners of the house. Two go up to the upper floor and one to the guest bathroom on the ground floor.
Of course, the pipes converge under the floor slab, but I wonder how the ventilation has to be executed here.
Do I have to extend all three risers up to the roof later to ventilate them?

Regards

That would be the normal case, yes.

But there are also solutions on the market, google Rohrentlüfter. However, optimal is something else in my opinion.

Morning

You only have 2 risers to the upper floor. Both for a toilet?
Whether ventilation is necessary for the guest toilet on the ground floor depends on the pipe routing.

Olli

Hi,
No, one for the bathtub, one for the shower+toilet.
And on the ground floor, the kitchen+guest toilet are connected to the same line.

Regards