Builder/TV Wall Mount Experts Question

[MCFCTrick]

The extension of our home was built in 1992. Apparently the walls to it are drylined to about 5'' thick, and behind are thermalite blocks as the wall, (I am assuming there is a gap between the two?). Obviously both the drylining and the thermalite are soft compared to other materials, so is there any fixings safe to use to mount a TV to it? The TV is a 42'', weighing 9kg, and it really needs to be on a cantilever bracket.

Have looked online but get contradicting advice. Any of you lot here able to answer?

Cheers.

 

[Ghandi's Flip Flops]

https://www.screwfix.com/p/timco-zip-fix-cavity-wall-fixings-6mm-x-40mm-10-pack/4787x
https://www.screwfix.com/p/easyfix-spring-toggles-5mm-x-50mm-20-pack/4257x

Something like the above. Top ones do up to 30kg in plasterboard

https://www.screwfix.com/p/gripit-tv-clam-plasterboard-fixings-25mm-x-205mm-4-pack/371hp
also used these no problem but they need a big hole in your plasterboard and some sizes say not to use on cantilever mounts

 

[ted the grass]

5" thick drylining??

 

[MCFCTrick]

5" thick drylining??

Yup, that's what the previous owner told me was used. I have drilled 3 and a half inches into it so far, lol.

 

[MCFCTrick]

https://www.screwfix.com/p/timco-zip-fix-cavity-wall-fixings-6mm-x-40mm-10-pack/4787x
https://www.screwfix.com/p/easyfix-spring-toggles-5mm-x-50mm-20-pack/4257x

Something like the above. Top ones do up to 30kg in plasterboard

https://www.screwfix.com/p/gripit-tv-clam-plasterboard-fixings-25mm-x-205mm-4-pack/371hp
also used these no problem but they need a big hole in your plasterboard and some sizes say not to use on cantilever mounts

That's what I was looking at, but need to find the cavity first.
The Gripit ones say not to use cantilever, but then they say their 'Rhino' ones can, but they look really different from the regular ones.
Thanks.

 

[Citizen of Legoland]

https://www.screwfix.com/p/timco-zip-fix-cavity-wall-fixings-6mm-x-40mm-10-pack/4787x
https://www.screwfix.com/p/easyfix-spring-toggles-5mm-x-50mm-20-pack/4257x

Something like the above. Top ones do up to 30kg in plasterboard

https://www.screwfix.com/p/gripit-tv-clam-plasterboard-fixings-25mm-x-205mm-4-pack/371hp
also used these no problem but they need a big hole in your plasterboard and some sizes say not to use on cantilever mounts

Them Gripit ones were a nightmare when I tried using them.

Regarding these types of fixings, if the plasterboard has been fixed by dab and dot cement, then sometimes there's no space for the 'prongs' to flip out. I usually just get a longer rawlplug and screw so it goes right through the plasterboard, cavity and into the breezeblock.

 

[ted the grass]

Yup, that's what the previous owner told me was used. I have drilled 3 and a half inches into it so far, lol.

More than enough to hold TV bracketry...was going to suggest a pattress, but you don't need one..

 

[Tuearts right boot]

Dont listen to the jobbing builders and DIY gurus on here, double sided tape works every time.

 

[idahoblues]

Assuming there has to be studs behind the drywall, locate and attach

 

[TonyM]

Assuming there has to be studs behind the drywall, locate and attach

You called...