I've been press ganged into fitting a wall mounting for a big LCD TV in a mate's flat. It's a tower block built by the council. It is a solid wall - the one between his flat and the next one. Obviously, I don't want to drill right the way through...
I'm intending using Rawlbolts. Have an SDS drill and the correct bit.
What is it likely to be made of and how thick?
You don't need rawlbolts. Just a decent plug and screw- look at the Fischer range, they'll have something that is suitable. You should get a clean, tight hole with sds, for the plug but consider gripfill or chemfix if not. most of the load is vertical, not pulling out from the wall and numerous 'small/shallow' fixings is better than 4 deep anchors. Look at the brackets available (with tilt, pan and swing out) rather than the standard that comes with the unit.
If it still goes titsup (and the neighbours lounge shares the same wall) you can always offer to hang their tv, to cover the holes, free of charge! :)
Is there a building caretaker you can ask?
Because it could be made of almost anything and there may well be known 'successful' techniques.
Owain
I like Rawlbolts. If you ever need to remove them you can. And they'll grip even when you hit a mortar coarse.
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But they don't like a shitty wall. Believe me, I gave up using them for hanging gallows brackets in lofts for just this reason, they can also be a bit overkill for this situation... Have hung quite a few flatscreens in my time and the odd rawlbolt can play up and be a pain in the arse. But sup2u whatever u feel comfortable with... do some test holes behind the tv area and see what the wall tells you:)
BTW: your sig about cats... Check out Debbie loves cats on google/YouTube and see her video for eharmony for a laugh!
Not true with:
MBQ
My experience says they're better than any plastic plug and woodscrew type fixing.
Overkill doesn't worry me.
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Mine tells me they're ok until the hole for them loses uniformity or the brick cracks under pressure from tightening them and With a predrilled template like a steel tv bracket you often need the holes exactly positioned and have no way of knowing what part of the wall fabric you're hitting until you drill. That's when it might be time to use a 'decent' wall plug (like the basin hanging variety) and some Rawlchem (or other polyester resin/2 part).
As I mentioned... It depends on wall- at the point you are drilling. Go for the anchor bolts but have the other method on standby for disintegrated holes.
As long as it works ;)
Yes. Thanks for correcting me on that oversight :)
I suppose if you're using them at the top of a wall where there is little weight on the bricks this might happen - but it happens with plastic plugs too. They both rely on expansion to grip. The difference being the bolt type can exert more pressure. But that's in the hands of the installer.
Exactly the same applies to any fixing which relies on expansion to grip. A resin type being different. However, a suitable sized bolt type will work in a mortar coarse - unlike a plastic one - due to the greater possible expansion.
The only possible disadvantage with bolts is they cost a lot more. Which simply doesn't matter in this case. It might if you're throwing things up for a living - like satellite dishes - where the profit margin can be small.
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