Stud wall to ceiling fixing

[James94]

Hi all, going to do the stud work myself, I will be having a 50mm service cavity in the ceiling. Where these studs run parallel to the trusses is it possible to fix the stud header to the underside of the 2x2 instead of fixing it to noggins?

There are 4 walls I was thinking of doing this for and none are structural, would building control have any issues with this?

See photo.

 

Regards James 

 

[Big Jimbo]

No problem with that as far as i can see. Nice tidy job.

[James94]

Thanks @Big Jimbo just need to get the timber for a reasonable price.

[James94]

Just got a few question prior to ordering and starting.

If we are to fix the stud headers under the service cavity as above picture do we need to fill the void above the header with sound insulation? Even if we have lighting wiring running through it?

Question 2. we are going to have some niches in bathrooms, where these are positioned do we have to double the thickness of the stud? or can the niche go back to back with the plaster board on the other side?

And finally been looking at the gerberit wall hung toilets, we will be fitting them on a block wall so we intend to stud this out to enable this to be concealed. What will be the best thickness studs to achieve easy fitting of waste and cistern.

Regards. James

[James94]

Anyone? Would hate to get wrong materials or miss something out.

Regards. James

[tonyshouse]

I don’t like the service void as I worry about thermal bypass and cold getting in there. I would fix ceiling plasterboard before building stud walls 

[James94]

So finish off vcl and service cavity, then plasterboard all the ceiling space as one room then divide up rooms with stud wall ?

 

Regards  James

[James94]

Anyone? Getting a little confused to what would be best way to proceed.

 

Regards. James

[Oz07]

I've done very similar to you except 140mm void, 2 lots of cross battened 70mm timber. Headers fixed exactly as you describe. I think I did chuck some acoustic wool offcuts above the studs in places but wasn't overly worried. I had 15mm pb on ceilings and I don't really have any occupied rooms next to each other. Had a niche as you describe to except for a bit of ply before the plasterboard

[James94]

Thanks for the reply @Oz07, don’t suppose you got detailed pics.

 Regards. James

[TonyT]

I would mark the position of the studs, gets the electrician in and leave coils of wires at switch drops etc, or indeed feed switches from below if possible so it’s was only light points to worry about , plasterboard then attach partitions.

[Oz07]

1 hour ago, James94 said:

Thanks for the reply @Oz07, don’t suppose you got detailed pics.

 Regards. James

Lost my old phone halfway thru but you won't go wrong. 

[James94]

so just to clarify would the best way be to fix 4x2 headers and 2x2 service cavity then plasterboard over the whole lot, would I need to cut out the plasterboard to fix studs to the header?

 

Regards James

Edited May 16, 2021 by James94
.

[James94]

@tonyshouse 

Sorry for dragging this post up again but I have some questions id like to have answered.

Q1 regarding the advice you gave on fixing the ceiling plasterboard prior to stud walls, how easy will it be to fix top plates to timbers which will be hidden by plasterboard if we take this route.

Q2 Taking this option, is it ok to have plasterboard sandwiched between top plate of the stud wall and the service cavity batten? 

Q3 can this route cause issues with electrician for cables and lighting switches as would be no walls for him to put wires in?

Regards  James

[tonyshouse]

1 easy, put nogs in agreed places 

2 is ok to sandwich plasterboard, nice if either light switch wire are hung in the right place or holes and pull through in top plate 

3 good electrician will be ok 

[tonyshouse]

Easy to Mark position of noggins on plasterboard once ceiling is tacked