Metal Stud Wall & Parallel Rafters

[Matthew Bester]

I wish to build a metal stud wall to partition my loft, there is a loadbearing brick wall I can build upon BUT if built there the ceiling runner ends up centered parallel with the rafters and have nothing to attach to.

The best I have come up with is adding some noggins (in red) 600mm apart between the rafters as depicted in this image:

What would other do? Any tips or gizmo I am not considering?

Regards,
Bester

 

[cdbe]

I would span more rafters, rows of noggins covering 4 or 5 rafters either side, or just lengths of timber (like purlins) fixed underneath if you're not worried about them intruding into the "room".

 

[Matthew Bester]

I would span more rafters..

I like your first suggestion the most. I had not considered this, add an extra rafter in the spot I need it. Do you recon this could be added without disturbing the felt and tiles? How best to attach it top and bottom?

 

[cdbe]

That's not what I meant, the rafters have very little lateral stability, your wall will push two or three sideways - you need to spread the force across 4 or 5 rafters either side.

 

[freddiemercurystwin]

I'd just go with your first proposal with some noggins between two rafters that'll be perfectly adequate, they're already braced with dozens of battens.

 

[Matthew Bester]

...the rafters have very little lateral stability, your wall will push two or three sideways - you need to spread the force across 4 or 5 rafters either side.

View attachment 330728

There is a purlin (not pictured I realise) its about chest height is that not doing that job above as you've drawn?

 

[cdbe]

Will certainly help. I just like to over engineer - especially for the sake of a few bits of wood.

 

[noseall]

I wish to build a metal stud wall to partition my loft, there is a loadbearing brick wall I can build upon BUT if built there the ceiling runner ends up centered parallel with the rafters and have nothing to attach to.

The best I have come up with is adding some noggins (in red) 600mm apart between the rafters as depicted in this image:
View attachment 330674

What would other do? Any tips or gizmo I am not considering?

Regards,
Bester

Three noggs, tops. One a foot in from each end and one in the middle.

 

[Matthew Bester]

Will certainly help. I just like to over engineer - especially for the sake of a few bits of wood.

Useally I am the same, but I want to interfere with the existing timbers as little as possible.

I redone my diagram to show more: White is exisiting structure, Blue is the metal stud wall and Red the proposed noggins.

There is a Tie (now pictured) across where the wall would go. I can build the wall inline with that Tie but would keep them seperate, not attached, more of a guide line. There is also that Purlin, now pictured. The other side looks similiar will be easier as there is chimney stack to attach to.

I probably need less noggins as Noseall pointed out.