Mount Coat Rack in Unknown Wall

[em_gw]

Hi,

I'm planning to hang a coat rack but I'm unsure about the type of wall I'm working with. There's a thin layer of white (I think gypsum) just under the wallpaper. Then there's a dark gray crumbly material (very crumbly) that's quite easy to drill into but crumbles easily (I guess it's not concrete because it's easy to drill into and then I see wood at the bottom of the drilled hole). The wall is thin (150-200 mm) and separates the hallway from the kitchen. I've considered concrete but it seems too easy to drill into, and I'm unsure why I see wood. It's definitely not plasterboard. The building was constructed in the 40s and is an apartment in a multi-story building, but it might have been renovated since then. Any help is appreciated! If anyone knows what type of wall it is and what type of plug is needed and if I should use anchor compound.

 

[halj]

Sounds like lightweight concrete. There is a special screw for this, however quite coarse, 8mm. For example, https://www.byggmax.se/lättbetongskruv-p24376

 

[em_gw]

Sounds like lightweight concrete. There is a special screw for this, though quite coarse, 8mm. For example:
[link]

Thanks for the reply! Is it common to have wood behind lightweight concrete? Unfortunately, the screws are way too coarse. The hat shelf can only be hung on screws whose heads are a maximum of 7-8 mm in diameter.

 

[tergo]

ev en kloasongvägg https://www.bing.com/search?pglt=21...IBCDkxNzRqMGoxqAIAsAIA&FORM=ANNTA1&PC=EDGEDSE

 

[em_gw]

possibly a kloasongvägg [link]

Thanks! I've googled a bit, it might be that. Do you know anything about installing in Kloasangvägg? Is it enough to go into the panel itself or should one go all the way into the wooden frame? I assume plugs are unnecessary if there’s a wooden frame to fasten into. As mentioned, the wall is quite thin so it shouldn't be far to the frame....

 

[tergo]

no plug is needed in that type of wall, the fracture panel usually sits with a 5-10 mm gap and there is typically about 25 mm plaster

is it enough if you go into the fracture panel

yes