How to mount a heavy TV on drywall with steel studs?

[jras]

Tested a bit last night drilling into metal studs and it seems to work excellently. However, you need a stud detector to hit exactly in the middle of the metal studs. It's hardly possible to find them at all by tapping with your fingers/screwdriver handle or similar. @tergo was absolutely right that the center-to-center distance is 45cm and they seem to be somewhere 35-40mm wide (so 38mm could be spot on). The building manager was wrong who said that the center-to-center distance is 60cm.

The son rented a Bosch Truvo detector via Hygglo, it worked perfectly, you could find the center with millimeter precision. Additionally, he got a bunch of Hilti HTB-2 drywall anchors from the renter that we tested fastening into the metal stud. Drill in the middle of the metal stud with a 13mm bit, it took quite a while to drill, seems to be pretty thick metal in these studs but eventually we made a hole. Inserted the hilti screw through the hole and flipped up the T-wing on the backside inside the stud. Worked well and seems to hold perfectly.

The big test will come however this afternoon/evening when we tackle the big TV, to be continued

 

[tergo]

yes, hilti expander is indeed better than mollyn, which has 4 wings that need to fit.

 

[A-Man_08]

There was nothing about reinforced walls?

 

[jras]

Did it mention anything about reinforced walls?

No, nothing was mentioned in the binder, but we are going to screw it in here in about an hour, so we'll see...

 

[A-Man_08]

Look at the drawing.

 

[falkn]

Look at the drawing.

Quite unusual to prepare with noggings for TV in new production. We have never done it.

 

[A-Man_08]

Quite unusual to prepare with noggings for TV during new production. We have never done that.

Probably depends a lot on who is building.
Why don't you do it?

 

[falkn]

Depends a lot on who is building.
Why don't you do it?

An honest answer is probably because there is no demand. Plus, people arrange furniture randomly. If it had been done, there would probably be complaints about placement or that it should have been fitted with all sorts of other things as well.

 

[A-Man_08]

An honest answer is probably because it is not in demand. Also, people arrange furniture however they like. If it had been done, there would probably have been complaints about the placement or that it should have been short-linked for everything else too.

Out of sheer curiosity, who are "we"?

 

[Pear4Life]

Is it single plasterboard or double plasterboard?

 

[Tomture61]

One thinks that plyfa + a layer of gypsum is minimal standard, or?

 

[falkn]

Out of pure curiosity, who are "we"?

Not something I'd like to share, but we have a turnover of about 3 billion in our property company/development. x10 at group level in Europe.

However, it probably doesn't matter. Never heard of it being shorted for TV. Now I'm talking about new production of apartment buildings, not villas. There it is probably more common.

 

[falkn]

One would think that plyfa + a layer of drywall is the minimum standard, or?

Hardly. 1 layer of drywall is definitely standard. If you're building villas, some have plyfa/OSB as standard. Most have it as an option.

 

[jras]

Is it single plasterboard or double plasterboard?

It was single plasterboard in most places we screwed. The exception was the wall to the bathroom, there it was double plasterboard, I guess you want a bit more sound insulation for the bathroom?

 

[jras]

Hardly. 1 layer of drywall is definitely standard. If you're building villas, some have plywood/OSB as standard. Most offer it as an option.

Yep, single drywall everywhere (except the wall to the bathroom where it was double drywall). No reinforced walls or crossbars anywhere, as we encountered anyway. The house is apparently built by Skanska.