Ceiling trusses at 600mm, how many noggins?

[Super_paulie]

hi everyone. Just after a bit of advice on my trussed ceiling.

My roof trusses are at 600mm centres and it been boarded with 12.5mm with all edges and perimeters noggin'ed out (yellow in image).

I am now aware that it should have been 15mm or battened out to 400mm centres, but that ship has sailed and here we are.
I cant seem to find any images of this online so i hope this question is ok with you guys, should i add additional noggins down the centre line (blue in image)?
I have access to above the boards and it would be fairly easy to add in these additional noggins if need to. I guess that would make like a 600x600 grid.

Cheers guys, i know this will have been asked 1000 times before but unless i see an image of it in front of me i struggle and i couldnt find much at all.

 

[bobski]

What are you doing to it?


You say 12.5mm - what board?

And what finish?

 

[Super_paulie]

sorry Bobski, should have said.
Other than being a 12.5mm Gyprock wallboard, all that is happening to it after that is to be skimmed. There will be nothing above it other than loft insulation, it is not going to have flooring or storage or anything above it.

 

[essexandy]

hi everyone. Just after a bit of advice on my trussed ceiling.

My roof trusses are at 600mm centres and it been boarded with 12.5mm with all edges and perimeters noggin'ed out (yellow in image).

I am now aware that it should have been 15mm or battened out to 400mm centres, but that ship has sailed and here we are.
I cant seem to find any images of this online so i hope this question is ok with you guys, should i add additional noggins down the centre line (blue in image)?
I have access to above the boards and it would be fairly easy to add in these additional noggins if need to. I guess that would make like a 600x600 grid.

Cheers guys, i know this will have been asked 1000 times before but unless i see an image of it in front of me i struggle and i couldnt find much at all.

Personally I wouldn't bother with those extra noggins now, at least the perimeter is fully supported.

 

[bobski]

With standard board, at 600s, it could potentially sag - especially if moisture is not controlled.

Decent board is better (denser core often with fibres in), like sound, moisture, or fire.(Green, blue/grey and pink boards).

As you are, I'd just put more screws in.

 

[Monkey Boy]

Put more noggins in yes

 

[Super_paulie]

thanks a lot guys, appreciate the response, hopefully the image i posted appears in Google search to help others looking. I bit the bullet and added in the additional noggins, only took a few hours so may as well. You live and learn, next time i'll just bring a ceiling down on cross timber at 400mm centres.

 

[Flotsam&Gypsum]

Personally I wouldn't bother with those extra noggins now, at least the perimeter is fully supported.

ya dont think give bit more support if u can? (noggins)

not ideal but hey

 

[spunky]

Use 15mm don’t think you need noggins on a ceiling

 

[Rossi46]

600mm is max spacing for 12.5mm. Should be fine.

 

[spunky]

Are you sure on a ceiling I thought it was 400?

 

[Rossi46]

Are you sure on a ceiling I thought it was 400?

You’re right, I’ve just checked and noggings are required at 600mm.

600mm is max spacing for 12.5mm. Should be fine.

 

[Super_paulie]

For what it's worth, lowering the ceiling and battering out at 400 would have been significantly easier I'd imagine... Live and learn and take it on board.

Thank you gents.