Gypsum + chipboard in all walls in new house - best screw/fastening?

[Zidane]

Hello!
I've moved into a fairly new house and the entire house has gypsum + chipboard in the walls. I'm now in full swing with putting up curtain rods, TV, hat racks, wall shelves, etc.

What are your tips for the best fastening? Double molly for heavy items and maybe 55mm chipboard screws for lighter ones?

Is there any way to know how thick the chipboards are? The house was built in 2015 by professional carpenters.

 

[Kane]

Probably 11 mm OSB board behind the drywall. For normally heavy items, including a TV, a wood screw is sufficient.

 

[Zidane]

Probably 11 mm OSB board behind the drywall. For normally heavy items, including TVs, wood screws are sufficient.

The house manufacturer just said chipboard. It might be worth drilling a hole in an inconspicuous spot to check and then patch it up, if you think so.

But is it unusual to have chipboard behind drywall?

 

[useless]

Is there any major technical difference? I have particle board behind the drywall in the room that has been renovated in modern times. Probably mid to late 90s, and back then OSB wasn't that common, right?

 

[Zidane]

Technically speaking, OSB is often much better for attaching things than particleboard. I would never have even thought that the house seller might not have 100 percent knowledge about whether it was particleboard or OSB or if he knows the difference. I'll probably make a 10mm hole or so and take a look. If it's OSB, then it's all systems go.

 

[Zidane]

Drilled and probably found 12mm chipboard behind - then expanders should be the way to go for heavy things? I don't quite understand why they didn't put OSB behind. Is it more expensive?

 

[Kane]

Are they really heavy things you are going to hang up?

 

[Zidane]

Are you going to hang really heavy things?

Since it's throughout the house, it might be good to know. I should at least be able to hit one stud with the TV, so that's fine. A rather heavy coat rack in the hallway, which is perhaps what I'm most worried about. And a bookshelf with books.

 

[Kane]

Such a wall holds more than you would think. A large portion of the load is absorbed by the friction between the wall and what is hung.

 

[SBH]

Technically, OSB is often better for attaching things than particle board. I would never have even considered that the house seller might not have 100 percent certainty on whether it was particle board or OSB or if he knows the difference. I will probably make a 10mm hole or so and take a look. If it's OSB, it's just full speed ahead.

Particle board and OSB are not good for fastening. The best is plywood.

 

[Zidane]

"is not good" is a slightly too rough generalization. Have mounted a 70-inch TV on a simple OSB board on the wall with 6 fairly thin screws. It has stayed rock solid for five years and still today.

 

[SBH]

"is not good" is a bit of an overgeneralization. I've mounted a 70-inch TV on a single OSB board on the wall with 6 fairly thin screws. It's been rock solid for five years, even today.

just fine for static load. but one with mechanical impact is directly worse.
there's a reason why carpenters want to switch to plywood

 

[olotor]

Have chipboards throughout the house from the 80s, without drywall. Never had any problems hanging anything. The heavily loaded hat rack is still there after 35 years. There shouldn't be any drastic difference between OSB and chipboard. In fact, OSB should be worse because it is "more splintery."

 

[Zidane]

precis good for static load. but with mechanical impact it is directly worse.
there is a reason why carpenters want to switch to plywood

For mechanical impact and heavy load, I think most people choose reinforcements in the wall over plywood, but if you can afford it, then you might as well go with plywood.

 

[SBH]

For mechanical impact and heavy load, I think most people opt for reinforcements in the wall over plywood, but if you can afford it, you can definitely go with plywood.

of course, you should do as you please. I prefer to use plywood over OSB