MF ceiling grid - hanger distance from walls

[Thorfun]

42 minutes ago, nod said:

Just an observation to the  picture The joint is wrong The pieces should butt together Both facing the same way with a 300 piec clipped over with eight pan heads holding it in place 

The hanger can be fixed directly to the joint 3.6 

 

Cool. So as I suggested and how @crispy_wafer did it. Good to know!

 

20 minutes ago, nod said:

When using mf Don’t forget to buy a couple of welding clamps 

Clamp all metal to metal 

I’ve just been using normal grip clamps which seem to do the job. But I’ll see if Screwfix have any of those you suggest. 

[Thorfun]

Oh. One more question please @nod  the BG video says to use jack-point wafer head screws but I’ve only got drywall wafer head screws. 

 

these are the screws I have. Are they ok to use?

 

 

or do I need the jack-point screws?

[Thorfun]

Don’t worry. Ordered jack-point screws and welding clamps from Amazon for delivery tomorrow by 1pm. Gives me time to walk the dog and do a bit of plumbing before they arrive!

[nod]

9 hours ago, Thorfun said:

Oh. One more question please @nod  the BG video says to use jack-point wafer head screws but I’ve only got drywall wafer head screws. 

 

these are the screws I have. Are they ok to use?

 

 

or do I need the jack-point screws?

They are Metal to metal 

Though you might have to use a few wafer self tappers in the primary Which is ok as you can put a wafer point in alongside once everything is in place 

[Pocster]

@Thorfun is a pro ‘cause he got gloves on -  ✊

[Thorfun]

Blimey @nod  those welding clamps are blooming marvellous! Best tip I’ve had in ages. Thanks. 
 

(No @Pocster!! Just no  🙄)

[nod]

11 minutes ago, Thorfun said:

Blimey @nod  those welding clamps are blooming marvellous! Best tip I’ve had in ages. Thanks. 
 

(No @Pocster!! Just no  🙄)

👍

[Thorfun]

made a start on this. there are, inevitably, gaps between the plasterboards. is there any point filling these with acoustic sealant when the second layer of boards below are going to be staggered? if so do I just squeeze on a bead and press it in with a filler knife? or is there something special that needs to be done.

 

[Pocster]

15 minutes ago, Thorfun said:

made a start on this. there are, inevitably, gaps between the plasterboards. is there any point filling these with acoustic sealant when the second layer of boards below are going to be staggered? if so do I just squeeze on a bead and press it in with a filler knife? or is there something special that needs to be done.

 

I’d say no which means everyone else will say yes .

[saveasteading]

43 minutes ago, Thorfun said:

is there any point filling these with acoustic sealant when the second layer of boards below are going to be staggered?

I think you would be the first. I wouldn't.

[Pocster]

10 minutes ago, saveasteading said:

I think you would be the first. I wouldn't.

I was right ffs !

[saveasteading]

Seriously now, as @Pocster would expect. I asked a Fire Professor how vulnerable the gaps were in single skin boarding, and he said that fire does not get through there, even if unfilled. *

Sound is different, obviously,  but usually less dangerous.

 

You could even argue that the resulting tiny gap acts as a sound absorbing resonating tube.  Just sheet over it.

At the perimeter though, fill any  gap, as you have both sheets with gaps coinciding.

 

*There were other reasons, now I think more, but this will justify it if you are questioned.

[Pocster]

40 minutes ago, saveasteading said:

Seriously now, as @Pocster would expect. I asked a Fire Professor how vulnerable the gaps were in single skin boarding, and he said that fire does not get through there, even if unfilled. *

He said the same thing to me followed by “ Silly (expletive deleted) just board over it ffs “