TV companies will just give you the mounting hole specs on the TV and tell you to find an appropriate bracket, then pass the buck to the bracket company.
I don't think they want anything to do with mounting, imagine the liability if a TV crashed to the ground and killed someone and the manufacturer of the TV was to blame.
[STORY] I was adding a home theatre to an already mounted 50" sony LCD on a swing arm bracket. The contractors the finished the basement mounted the TV. I swung out the TV and started finding studs, measuring, marking etc. The homeowner comes down to chat, a minuit later we hear a CRUNCH as the TV tore off the wall.
The top most load bearing lag screw was not screwed into the middle of the stud, it just caught the corner. I ended up remounting the TV, it hasn't fallen since.:thumbup:
Moral of story, get the centre of the stud!
[/STORY]
As far as the PL suggestion it would definitly makes things stronger but your shooting yourself in the foot. I've taken alot of TVs off, moved TV's replaced TVs added articulated arm brakets etc.
One time I used chemical anchors in a brick wall, we agreed on a height for the TV, I mounted it. Lady sees it mounted..."hmmm can it come down a few inches?"...Sure lemme get my grinder.:laughing:
Not in a situation such as you describe. I was just checking. Believe or not, many don't even think to talk to the manufacturer of the products they install to see what they recommend.
If your tapcons strip out like we all have had happen. Just stick a piece of 12g solid copper wire in the hole then screw the tapcon back in. It holds like you would not believe.
Thanks for the tip! Never would have thought of that one.
I have a put up a few big tv's I would recomend using what ever size fastner the mount says to use. The last one wanted 6 3/8" lags into studs. IT was a huge plasma on an adjustable arm thing.
Articulated arms have such different loads on the fastners. The arms are basically trying to pull out the top screws, where flat mounts are testing the shear stregnth of the fastners. It really doesn't take much to hold a flat mount bracket, but a swing arm needs some serious care.
Sorry for the crappy cell phone pics, there were done a few years ago back when I mounted alot of TVs.
The top pic was a retro job, the TV is mounted with a bunch of lead sheild anchors. It was a really soft brick so it would not take well to large anchor bolts. I ended up removing a brick from behind the tv and another on the left side of the fire place to fish the speaker and video cables.
The bottom pic is lousy, but in fact that TV is mounted with a PRF bracket to that surfboard shaped piece of wood, the speakers are also mounted to the wood. The surfboard is then anchored to one of the biggest and baddest Premier double articulated arms (since discontinued). The cabinet flips open and the entire assembly pulls out and turns 90 degrees in both directions. The swing arm is mounted directly to the poured concrete wall of the condo with 5/8s concrete anchors.