Ah the Corefix product descriptiuon says "not suitable for TV Cantilever brackets
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Fitting extending arm TV bracket to Plasterboard
- Thread starter paulfoel
- Start date
I think your 20cm by 20cm board is the way to go. You can use your existing fixings and double up with something like corefix, you could also triple up by using an adhesive such as Stixall to hold the timber to the wall.
4 concrete screws into brick or block with hold your weight on a bracket .
Out of interest, I see the screws/plus are 100 or 120mm. How long is the sleeve part?
(Just wonderering if I use these to screw into wood, then into plasterboard, I want the sleeve part to reach the block behind)
So, outside of wall - plasterboard - air gap - breeze block - already 30mm approx? I want a decent thickness bit of wood but not so much it means the sleeve is ineffective.
I;'m thinking 25mm wood thickness (100x100 square on wall) should be strong enough to hold anything?
I would double the height - 200x100, and if possible, mount the bracket to the bottom edge of the timber. The leverage of the arm is vertical, the wider spaced the upper and lower fixings, the more able they are to resist the leverage.
Anyone know of the formula that will calculate weight that a TV (known weight) will place on a cantilever arm (known length)?
Off the top of my head - double the distance, and it will quadruple the load on the fixings.
I guess difficult to work out.....
Say the fittings are rated at 15kg each. Does that mean something flat on the wall? A shelf sticking out 30cm? A radiator sticking out 5 cm?
Say the fittings are rated at 15kg each. Does that mean something flat on the wall? A shelf sticking out 30cm? A radiator sticking out 5 cm?
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I would go OTT on the fixings.
I have an extending TV bracket. It's mounted into a chimney breast, but I didn't want to go near the flue as it's being used without a liner, so I rang Fischer and he calculated to use 4x 100mm frame fixings either side of the flue.
I like to over engineer things, so doubled up!
The ply I got was 25mm, so I could recess a socket into it without having to bash the breast about.
The bracket I reverse bolted through the ply with 6x 8mm stainless bolts, washers and nuts.
The TV weighs 11.5kg.
The bracket, with its original wall plugs and 10mm bolts was rated at 65kg load.
I have an extending TV bracket. It's mounted into a chimney breast, but I didn't want to go near the flue as it's being used without a liner, so I rang Fischer and he calculated to use 4x 100mm frame fixings either side of the flue.
I like to over engineer things, so doubled up!
The ply I got was 25mm, so I could recess a socket into it without having to bash the breast about.
The bracket I reverse bolted through the ply with 6x 8mm stainless bolts, washers and nuts.
The TV weighs 11.5kg.
The bracket, with its original wall plugs and 10mm bolts was rated at 65kg load.
That's exactly what I would/did suggest above... The bracket low down on the timber panel, minimising the load from the weight of the TV, on the fixings at the upper edge.
They seem to be 50mm
With the 105mm plug the screw is 95mm if your board is 18mm thick you might be better off fixing the corefix through the plasterboard only and then screw through the board, possibly using 100mm screws.
Yes was going to do similar. 4x120mm fixings though.
My TV is 15kg.....
25mm Ply.... Was thinking maybe thicker or solid wood? Not sure about ply....
Ah yes see what you mean. Drill hole in plasterboard. Insert plug and then drill though board into this hole....
I guess then need to consider that you're losing the thickness of the board. (in this case 18mm - but like you said screws are 95mm anyway)
Look at the answer from Peter Kapitola
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