Basement wall, how to renovate

[Snickerick]

Do you mean that I should cast the entire wall with concrete?

The thought has crossed my mind, but it's also a real heavy-duty job. Just building a form that can withstand it is at least as much work as installing the cembrit panels.

I mount the panels on studs that are set up first. That way, I get a completely smooth and even wall. My initial thought was to mount them with spacers against the existing wall. But as mentioned, it will be difficult to make it even, it will be hard to install, and the panels need to be mounted with screws every 20 cm. It simply won't work well. I will explore the possibility of using steel studs that are 27mm. Then it will extend about 35-40 mm out from the outermost point of the existing wall. I think I can live with that

 

[Snickerick]

Yes, the question is whether one can manage with 9mm, or if for some reason one should go for 12mm?

 

[BosseHansson]

Do you mean that I should cast the entire wall with concrete?

I've considered it, but that's quite a big job. Just building a mold that can withstand it is at least as much work as installing the Cembrit panels.

The question is how sturdy the mold needs to be if you can accept casting, say, 5dm at a time. The downside is that it might not be so cheap if you don't have decent casting boards. If you're going to tile, OSB should suffice.

If you frame as you mentioned, it might be good to avoid the risk of cracks at the panel joints.

 

[Snickerick]

Organic material is absolutely not an option.

 

[Snickerick]

Well, I have tested the variant with casting concrete. It works, but it requires a very stable mold, and as mentioned, it's quite a bit of work, especially when you get up a bit and particularly the last bit up towards the ceiling.

Right now the big question is whether I can find any suitable studs that don't add much depth. A steel stud of about 25mm would be perfect. Arranging a mounting point in the middle if needed is no big deal.

 

[heimlaga]

I would dig out the joints and fill them with mortar.

Those types of coatings on the inside of old undrained basement walls tend to have moisture problems no matter what you do.

 

[Marcussjogren]

I would dig out the joints and fill them with mortar.

Those types of interior coatings on old un-drained basement walls usually end up with moisture problems regardless of what you do.

They are not meant to be completely dry either. They are, like root cellars, made to be somewhat cool and damp.

 

[Snickerick]

Hmmm, isn't it time for K-Rauta to have a 20% club day again soon
That would be just perfect

 

[Snickerick]

Now it will probably be so that I put boards on all "internal walls", and on the outer walls I will either remove all the plaster, scrape out the "joints" and fill them, then we'll see if I plaster, or settle with just repointing. The stones that appeared when they were thoroughly cleaned are really nice. It's a shame to hide them behind a lot of plaster.

 

[henkeson]

@Snickerick Did it turn out well with the fiber cement boards? I'm considering a similar solution for my basement, but mostly for the exterior walls.

 

[Davion]

@Snickerick Did the fiber cement boards work out well for you? I'm considering a similar solution for my basement, especially for the exterior walls.

One of my first projects I shared on this forum was about basement walls. This is how I handled the interior walls, and if I hadn't had completely crumbled lightweight concrete against all the outer parts, I would have done the same for the exterior.
https://www.byggahus.se/forum/threa...egg-enbart-vaeggar-som-aer-mot-insida.388893/

 

[henkeson]

One of my first projects I shared on the forum was about basement walls. This is how I worked on the inner walls, and if I hadn't had completely crumbled lightweight concrete against all external parts, I would have done the same on the outside.
[link]

Thanks for the info. I'm considering the same frame solution, but with fiber cement boards. Should work well against exterior walls.

 

[Snickerick]

@Snickerick Did it turn out well with the fiber cement boards? I'm considering a similar solution for my basement, especially for the exterior walls

Yes, I think it turned out very well. Super happy. Easy to keep clean and neat, easy to mount things on the walls, feels cozy.

 

[henkeson]

Sounds promising. Do you have any pictures of it?

I am planning to build a laundry room in the basement, but I don't want it to have too much of an "industrial" feel.