Renovate basement level

[Ankibygg]

Hello everyone!
We have bought a house from the late sixties with a completely unfinished basement level.
We planned to renovate it ourselves but are beginners at this.
It will be as simple a renovation as possible. No water, wet areas, etc. Just a guest room, family room, and a large walk-in closet.
The walls are made of this material, (see the picture) how do you work with these?
How else should one proceed? Taking all advice and experiences.
Has anyone done similar projects?
Approximate cost?
The basement level is 85 sqm.
Thanks in advance.

 

[Liteavvarje]

Heraklit is crap, you can't attach anything to it, but it's excellent for polishing, then setting boards depends on how drainage and other moisture that may exist are. The Heraklit is perhaps 50 or 100 thick, you'll need long screws to put up boards or build out with studs, same issue with moisture there.

 

[Ankibygg]

Hi and thanks for your answer!
There is no moisture at all down there, very dry.
So is it just to plaster directly on the walls?

 

[Liteavvarje]

It is perfectly fine to polish heraklit and it is probably the only thing relevant for that kind of so-called insulation at the time. A lime mortar is suitable, with a bit of slamming first, so it adheres better.

 

[Ankibygg]

Ah great! Thank you so much for your help

 

[Fred vom Jupiter]

I have the same in my basement and am considering putting wet room panels (Jackon) on the Heraklith because it's so crumbly that it becomes very difficult to plaster. Additionally, it would require
Could there be problems with this? Like moisture collecting in the Heraklith between the panel and the concrete wall? One might reason that it becomes an unventilated air gap. However, there is only inorganic material there that can't rot or mold. What will be the difference in function between plastering with mortar and installing a panel?

In my case, it's going to be a bathroom.

By the way, I thought it was called Träullit.

 

[Liteavvarje]

I have the same situation in my basement and I'm considering putting wet room boards (jackon) on the Heraklith since it's so crumbly that it becomes very difficult to plaster. Additionally, it would require
Could there be problems with that? Like moisture accumulating in the Heraklith between the board and the concrete wall? One could argue that it becomes an unventilated air gap. However, there are only inorganic materials that cannot rot or mold. What's the difference in functionality between plastering with mortar and attaching a board?

In my case, it's going to be a bathroom.

By the way, I thought it was called Träullit.

A beloved child has many names, as long as we know what it is, the thing about putting boards on and making a wet room definitely involves a sealing against the wall, if there is any form of moisture in the wall, it doesn't have to be much, it builds up over the years, so the moisture will not evaporate into the room, the only thing then to do is a ventilation gap between träullit and the new wall that is open at the bottom and top.
It can be dry but very difficult to detect, if the wall is against the outside, against the fresh air, it is fine to attach boards that are moisture-resistant, like minerit which is cement-based.