I've made an extension that will include a bathroom. Therefore, I need to run pipes from the old part to the extension.
I can run the drainage through a vent in the old foundation, but what should I do with the water?
Can I pass the pipes through the studs between the old and new building so that they come out in the crawl space of the extension, or does it weaken the stud too much?
The wall is five meters long. Short side of the house.