What screws are suitable for drywall, drywall, chipboard?

[Bart]

Sounds like they built a partition wall with a 45mm stud. Then when the kitchen was installed, they added another 45mm stud with chipboard on the outside to create an installation wall where pipes and electricity can run on the backside and cabinets can be screwed into the chipboard. However, rough guess on my part.

 

[Bjober]

Sounds like they built a partition wall with a 45mm stud. Then when the kitchen was installed, they added another 45mm stud with chipboard on top to create an installation wall where pipes and electricity can run at the back and to be able to screw the cabinets into the chipboard. However, this is a rough guess from my side.

That still doesn't explain how there can be 20mm of air between the plasterboards and which plug would fit.

I would probably have put in some goo, like filler, and screwed it in.
Or routered out the hole in the inner plasterboard with a bit that you twirl around a bit until the molly has space to expand.

 

[Bart]

Aha, maybe I read or thought wrong? I interpreted it as 50mm+50mm. But if it's 50mm total, I'm without an answer.

 

[Rovvan]

Sounds like they built a partition wall with 45mm studs. Then when the kitchen was going up, they added another 45mm stud with chipboard on top to create an installation wall where pipes and electricity can run on the back and cabinets can be screwed into the chipboard. However, this is just a rough guess on my part.

The wall in question is not near the kitchen though 😅

 

[Rovvan]

That still doesn't explain how there can be 20mm of air between the gypsum boards and which plug fits.

I would probably have filled it with some putty or the like and then screwed in.
Or routed the hole in the inner gypsum board with a drill, turning it around a bit so that the molly can expand.

That might be an alternative, even though it feels incredibly cumbersome. I need to get the property manager here anyway so they can fix a door that can't be closed, so it seems like it might be best to ask them what should really be done.

 

[Bart]

The wall in question is, however, not by the kitchen 😅

Two mistakes on my part then. I thought I read that the kitchen was on the other side.