Mounting TV / Heavy Objects on Ply

[steveoelliott]

Hi Folks,

 

Not got a specific design in mind yet but possibly going to build a TV panel out of ply of MDF (ply would be better to fix to). If the perimeter and center of this panel had 2x4 timbers fixed securely to a brick / block wall with the ply screwed to these, what fixings should I use for the TV bracket onto the ply?

 

The ply may be 18-22mm thick so any decent length screw is going to go out the rear of the ply. Is this likely to pose a problem? Of course it might be possible to add more 2x4 timbers so as the fixing is through the ply and the 2x4 but is this necessary?

 

Thanks in advance...

[markc]

Going through the ply means you have the max pull out possible (short of a washer and nut behind). TV’s are not heavy and they are slim so majority of the load is straight downward putting the screws in shear rather than tension. Say 4x 5mm screws will hold a very big tv, a couple extra at the top is belt and braces.

if you need piece of mind, stick a piece of ply behind the location of the fixings as a doubler … not needed unless you intend doing pull ups on the tv bracket.

Edited November 6, 2023 by markc

[steveoelliott]

32 minutes ago, markc said:

Going through the ply means you have the max pull out possible (short of a washer and nut behind). TV’s are not heavy and they are slim so majority of the load is straight downward putting the screws in shear rather than tension. Say 4x 5mm screws will hold a very big tv, a couple extra at the top is belt and braces.

if you need piece of mind, stick a piece of ply behind the location of the fixings as a doubler … not needed unless you intend doing pull ups on the tv bracket.

Didn't even think of the washer and nut idea. That would be very easy to do actually but make removal of the bracket more difficult later if a new / different one is needed.

[Conor]

I've a 43" TV fitted to plasterboard using Fischer plugs. You don't need much if they are flat mounted.

[Pocster]

28 minutes ago, Conor said:

I've a 43"

Get her ! ☺️

[steveoelliott]

29 minutes ago, Conor said:

I've a 43" TV fitted to plasterboard using Fischer plugs. You don't need much if they are flat mounted.

I trust you mean wall anchors and not the standard Fischer Duopower plugs? Not that they aren't good.