ᐅ Installing a HT Pipe Inside a Wall (Concealed)

Hello everyone, here is the problem:

I want to reroute my kitchen drain pipe (DN50) differently. The issue is that I have a wooden beam ceiling and a low ceiling height, which makes it very difficult to run the pipe above the floor. My plan was/is to run it along the wall with the proper slope, but the problem is that the wooden beams run across there. So I have to stay in front of them, which means I would need to apply about 6cm (2.4 inches) of plaster to hide the pipe inside the wall. (Drywall or similar cladding options are not acceptable to me, as I dislike them and find them annoying every day.) Is it possible to apply 6cm (2.4 inches) thick plaster in multiple layers? Does that work?

Thank you very much in advance.

Of course, you can apply 6cm (2.4 inches) of plaster to the wall, but:

- you will have quite a bit of drying time
- it also raises the question of how well and how long it will hold up

What speaks against drywall for you? When done properly, it is excellent and, unlike 6cm (2.4 inches) of plaster, it is also more durable. With 6cm (2.4 inches) of plaster, it becomes quite a "challenge" to attach anything to the wall. And I think it is also more susceptible to damage compared to drywall.

Well, when it comes to drywall construction, I always consider a few points: a) mice tend to move behind it, b) you can't see the masonry or how it behaves, and c) wall cabinets are tricky—you need OSB boards underneath for proper support. I understand the drying times; I would prepare the substrate with a primer and then embed a mesh. Previously, there was about 6-7cm (2.4-2.8 inches) of lime plaster applied in some areas, but it had cracked because there was no mesh reinforcing it. So, I would personally prefer a more solid wall.

Hello

But you won’t be able to mount a wall cabinet on 6-7 cm (2.4-2.8 inches) of lime plaster.

Olli

Yes, I know that. That’s why I would use lime-cement plaster and choose a dowel that is at least 10cm (4 inches) long, so it anchors in the masonry and not just in the plaster.

Are there cabinets in front of them?