Wall Mount Advice for Dry-lined Exterior Wall

[craigpenton]

I have on order a nice new LCD telly and have just purchased <<this>> wall mount as highlighted by <<this>> thread.

I want to install the tv on an external wall which I believe is dry-lined. (i.e. small gap behind the plaster board before reaching breezeblock ... there are also no studs in this wall ... hopefully I am right so far )

A very friendly chap at work has given me a number of different fixtures and has recommended one which has a metal spring loaded thing which once inserted into the wall will spring open and use the plasterboard to take the weight. This guy knows LOTS more than me so I am inclined to believe him however I was originally thinking of drilling into the breezeblock to get a 'safer' mount. (Are these anchor bots??, or should I consider fischer frame??)

Given the right advice I feel fairly confident I can manage this small feat of DIY but I could really do with some other expert opinions.

Cheers!

Craig

PS I am actually only getting a 32 inch Tosh which is quite light but I want to ensure any future, potentially much heavier, tvs can go on the same mount.

[clockworks]

Spring toggle fixings need quite a large gap between the plasterboard and blockwork to work correctly. If the wall is drylined onto a framework, they should work. If the board is held with adhesive, they won't.

Frame fixings or anchor bolts will pull the board down onto the blockwork, breaking it, as you tighten the fixings.

An earlier thread suggested drilling the holes through the board (but not through the blockwork) for frame fixings, then pumping in some gripfill adhesive. Once the adhesive has set, drill the holes for the fixings. The adhesive will stop the board being pulled in, acting like spacers.

[craigpenton]

Cheers clockworks!

The gap behind the plasterboard, from memory, is only around an inch (perhaps a bit bigger) so there isn't a lot of room however I assumed that as I had to drill a hole of a certain width to insert the spring fixing that it wouldn't hurt to drill a little into the breeze block to give me the extra space required. Does this seem reasonable?

If this does work do you think this would be good enough for a decent weighted TV or is the gripfill solution a much better one for heavier weights?

PS Is <<This>> the type of thing you mean for gripfill?

Thanks again for the help so far.

Craig

[clockworks]

As long as there is enough of a gap to allow the spring toggles to open, you should be OK.
Personally, I wouldn't risk hanging a TV just on plasterboard.

An inch gap seems a lot for a dot & dab fixing. Are you sure there isn't a framework in there?

[rodster]

The best stuff to use if you need a very strong fixing and have a masonary wall is resin, it wont split the wall material and you can set in threaded rod to it, to which the screen bracket can be bolted onto.

http://www.hilti.com/holcom/modules/....jsp?OID=-9818

Instructions are usually available from the place of purchase.

Rod.