What is the wall made of?

[ErikAbe]

Hi! I'm trying to figure out what material my wall is made of so that I can hang pictures and a picture shelf. Does anyone know, and also how to drill into the wall afterwards?

Thanks!
Erik

 

[Bronken]

Wall material:
Hard to see. Something thin - so either masonite (considering how it's cracked after a hammer blow) or possibly renovation plasterboard!? However, the holes look more like very thin chipboard ...
When was it built?

 

[ErikAbe]

Thank you! I know the apartment was built in 1929, but I don't know if the wall is that old.

 

[A-Man_08]

What comes out if you drill a small hole?

 

[ErikAbe]

I drilled with a hammer drill and it went through to a cavity in the middle. Some kind of gravel came out, but the wall is not hard like concrete or brick. It left a pile of dirt, I'm not sure how to describe it exactly. But I couldn't insert a plug because the wall kind of got hollowed out by it.

 

[Stefan N]

Render outer surface that is painted, behind it probably slag plates or light concrete.

 

[bygging_1919]

It seems to be concrete block. It is usually quite porous.
Here are good answers:
https://www.byggahus.se/forum/threads/plugga-foer-skruv-i-betonghalsten.306903/

 

[ErikAbe]

Render on the outside that is painted, behind it probably slag panels or lightweight concrete.

Thank you!

 

[ErikAbe]

It seems to be concrete hollow brick. It is usually quite porous.
Here are some good answers:
[link]

Thank you so much!