Mounting a 22" LCD TV on Plasterboard
Discussion
Depends how the plasterboard is mounted to the main wall. Battoned every 6-9 inches and studded properly with screws, it shouldn't be a problem. Likewise if studded with a generous amount of plasterboard adhesive.
You need something like these to mount it....

Fischer Spring toggles. Drill hole, collapse spring, push through, tighten up.
Just mounted some heavy kitchen cabinets to a stud wall using these, they aren't going anywhere. Not expensive, get something reasonable like 50-80mm though, just to make sure.
You need something like these to mount it....

Fischer Spring toggles. Drill hole, collapse spring, push through, tighten up.
Just mounted some heavy kitchen cabinets to a stud wall using these, they aren't going anywhere. Not expensive, get something reasonable like 50-80mm though, just to make sure.
I recently used these to mount kitchen units to a plasterboard wall, rock solid and I don't expect them to come down anytime soon - cavity wall anchors, the sleeve bends in the middle and draws towards the back of the board as you tighten. Benifit of these over the spring toggles is you can take whatever you're mounting up and down until your hearts content, with the spring toggles once the fixing is through the hole if you need to undo the screw the toggle part falls down the back of the cavity and you need a new one!

Edited to add: I think these are the fixings you talk of in your OP, if so, yes, they should work fine.

Edited to add: I think these are the fixings you talk of in your OP, if so, yes, they should work fine.
Edited by anonymous-user on Friday 29th August 09:06
yellowbentines said:
+1 I put a 32" TV on my wall but put batons across the upright beams to support it as it would have been too heavy. A 22" will be fine using the above suggested method.
As has already been said, the first suggestion will not work correctly if you wish to remove the tv from the wall.
HRG said:
I've got a 42" hung in the bedroom, just found the studs behind the plasterboard and screwed straight into them. It ain't going anywhere 
Can i ask how you located the studs behind the wall?
i want to mount one in my bedroom but am unsure how to locate the wooden things that run behind the plaster board.
You want some of these, much stronger than the other screws shown.

http://www.screwfix.com/prods/11595/Fixings/Cavity...
ETA: I have these holding up heavy shelves and a mountain of a mirror, not a hint of them moving.

http://www.screwfix.com/prods/11595/Fixings/Cavity...
ETA: I have these holding up heavy shelves and a mountain of a mirror, not a hint of them moving.
Edited by Silverbullet767 on Friday 29th August 15:09
bull996 said:
HRG said:
I've got a 42" hung in the bedroom, just found the studs behind the plasterboard and screwed straight into them. It ain't going anywhere 
Can i ask how you located the studs behind the wall?
i want to mount one in my bedroom but am unsure how to locate the wooden things that run behind the plaster board.
Silverbullet767 said:
bull996 said:
HRG said:
I've got a 42" hung in the bedroom, just found the studs behind the plasterboard and screwed straight into them. It ain't going anywhere 
Can i ask how you located the studs behind the wall?
i want to mount one in my bedroom but am unsure how to locate the wooden things that run behind the plaster board.
215cu said:
Silverbullet767 said:
bull996 said:
HRG said:
I've got a 42" hung in the bedroom, just found the studs behind the plasterboard and screwed straight into them. It ain't going anywhere 
Can i ask how you located the studs behind the wall?
i want to mount one in my bedroom but am unsure how to locate the wooden things that run behind the plaster board.

this would depend on what type of hanging bracket your thinking of using
LCD's aren't very heavy so shouldn't cause much of a problem,
however if you intend hanging it with one of those adjustable brackets which pull out from the wall and then swivel/pivot in different directions I'd say it's not a good idea,
these types of brackets tend to cover only a small area when fixed to the wall which will increase the load and extending the bracket will only make things worse,
so your pretty much limited to the large flat brackets that just tend to tilt but will spread the load evenly across the wall
this type of bracket should be fine and as long as you use a suitable fixing (the ones shown above are all fine) and will last for years
plasterboard will take a fair bit of weight as long as it's well distributed.
I've hung large radiators on plasterboard walls before without any problems arising, so a LCD tv should be a walk in the park
having said this it's always best to fix to something solid and I always consider fixing to plasterboard as something of a compromise as unfortunately the solid bits aren't always where you want them to be
if your TV doesn't have to be in a specific spot as mentioned you could try finding a stud to fasten to,
a stud finder will do the trick or you could always try HRG's method
even if you only hit one stud and then have to rely on fixings for the rest it will make the bracket more secure
basically all you need to remember is try and spread the load as much as possible and you'll be fine
LCD's aren't very heavy so shouldn't cause much of a problem,
however if you intend hanging it with one of those adjustable brackets which pull out from the wall and then swivel/pivot in different directions I'd say it's not a good idea,
these types of brackets tend to cover only a small area when fixed to the wall which will increase the load and extending the bracket will only make things worse,
so your pretty much limited to the large flat brackets that just tend to tilt but will spread the load evenly across the wall
this type of bracket should be fine and as long as you use a suitable fixing (the ones shown above are all fine) and will last for years
plasterboard will take a fair bit of weight as long as it's well distributed.
I've hung large radiators on plasterboard walls before without any problems arising, so a LCD tv should be a walk in the park
having said this it's always best to fix to something solid and I always consider fixing to plasterboard as something of a compromise as unfortunately the solid bits aren't always where you want them to be
if your TV doesn't have to be in a specific spot as mentioned you could try finding a stud to fasten to,
a stud finder will do the trick or you could always try HRG's method

even if you only hit one stud and then have to rely on fixings for the rest it will make the bracket more secure
basically all you need to remember is try and spread the load as much as possible and you'll be fine
HRG said:
They are usually on 16" centres IIRC. You can also use a bradawl if you don't mind making a few small holes. 
It does rather depend on the joiner who built it. 

Remember that there are come types of plasterboard partitions that don't have studs in them (eg. Paramount and Stramit), in which case you ain't gonna find a stud no matter how good you are at tapping or how much you spend on stud detectors.

My experience of stud detectors is that they are a bit flaky, anyway, but that's another story....
... but to answer the OP's question, you're loading the fixings in single shear and plasterboard is usually a lot stronger than people give it credit for, providing the loads are static. You should be fine with heavy duty toggle fixings.
Edited by Sam_68 on Friday 29th August 20:29
Silverbullet767 said:
You want some of these, much stronger than the other screws shown.

http://www.screwfix.com/prods/11595/Fixings/Cavity...
ETA: I have these holding up heavy shelves and a mountain of a mirror, not a hint of them moving.
You've been lucky, they are not suitable for heavy loads. 
http://www.screwfix.com/prods/11595/Fixings/Cavity...
ETA: I have these holding up heavy shelves and a mountain of a mirror, not a hint of them moving.
Large spring toggles are the easy way out for a smallish set, but if it were my expensive TV i'd be cutting a section of plasterboard out and putting timber in behind it.
Edited by MonkeyHanger on Friday 29th August 20:27
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