Knee wall studs / roof structure (retrofit project)

HugoWedge

New Member
Hi all,

I’m retrofitting a 1930's end of terrace and renovating/insulating 2 rooms in roof at the moment.
I've stripped out old wallpaper and opened up sections of a knee wall (lath and plaster) to gain access to the eaves and install much needed insulation. While doing so I exposed a few timber studs which are directly nailed to the roof rafters (150x50mm @ 400 centres) at a height of 1.6m. I thought it would make sense to move these studs back a bit to gain some extra space and square off the room.
It seems logical and fairly straightforward but I'm not sure if these studs (70x50mm) were simply holding the lath and plaster dwarf wall or if they have any structural function. I'm convinced they're not structural but may help to prevent sagging, although there's no indication of sagging on any of the rafters (they barely touch the top of the studs).
I took some photos of the roof structure/studs (attached below) and I was wondering if you could give your opinion on this?

Much appreciated.

Roof-01.jpg Roof-02.jpg Roof-03.jpgRoof-05-attic above room.jpg Roof-05.jpg
 
If anyone has any thoughts on this would be really helpful to hear. I understand I may need professional advice from a structural engineer but it would be useful to test how likely and feasible this change is before spending a lot on professional fees (budget is tight).
Thanks.
 
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