Partition wall widths

[Vijay]

Hi,

 

Am I right in saying 100mm timber is used for non load bearing internal walls? I've only got a few in my house and on the set out plan, they are sized at 100mm and on the finished plan, they show 150mm. That figure is the plastered size but where is the extra 50mm? 

 

Is 12.5mm plasterboard used for these walls? How thick is the plaster coat?

 

Cheers

 

Vijay

[ProDave]

100mm  (actually 95mm) is standard with 12.5mm PB.   If you are really tight you can go down to 68mm CLS on 400mm centres if a room is tight and need every last mm of space in a room.

[Vijay]

That's what I thought. Any idea why he's then stated 150mm for finished walls??

[ProDave]

Are you SURE they are not load bearing? If load bearing they may need OSB racking panels as well as plasterboard.

[Vijay]

definitely not load bearing. 

 

Out of interest, how thick would the OSB racking panel be?

[ProDave]

1 minute ago, Vijay said:

definitely not load bearing. 

 

Out of interest, how thick would the OSB racking panel be?

mine are all 11mm, but my outside walls have 2 layers of 11nn racking.

 

I am putting OSB on one side of even my non load bearing walls, it makes them so much more solid.

[recoveringbuilder]

All our internal walls have Osb to one side ,140mm insulation in other side but our outside walls have 140mm rigid insulation topped off with 37.5mm foam backed plasterboard, just saying tonight we’re spending all this money on a pellet stove which may not need to be on very much!

[AliG]

My architect decided that he wanted the internal walls to be 150mm thick as they would appear more substantial. 

 

We ended up with all kinds of wall thicknesses depending on whether they are supporting as we have some 190mm blockwork supporting walls plus plasterboard on dabs, but even our stud walls are 150mm thick.

[nod]

Unuseuall for 150 studs not to be load baring 

Joist ends ?

[Vijay]

my load bearing walls are 100mm blockwork

[Nickfromwales]

TF houses often have load bearing '100'mm stud walls, just constructed differently to deal with, and transfer, the load to founds. Double stacked headers and multiple vertical studs in the same location are simple and effective methods, but anything more can be transferred down to founds with 90mm box-section steel hidden in the ( 100mm ) studs. 

[Vijay]

10 hours ago, ProDave said:

mine are all 11mm, but my outside walls have 2 layers of 11nn racking.

 

I am putting OSB on one side of even my non load bearing walls, it makes them so much more solid.

 

I might try this on a wall then when I construct them

[nod]

10 hours ago, Vijay said:

my load bearing walls are 100mm blockwork

If they are not load baring

Build them out of 70 mil timber or metal and simply plasterboard eithether side with 12.5 board

The architect can’t dictate the thickness of a stud wall

There will be lots more important things to worry about

[Vijay]

12 hours ago, nod said:

If they are not load baring

Build them out of 70 mil timber or metal and simply plasterboard eithether side with 12.5 board

The architect can’t dictate the thickness of a stud wall

There will be lots more important things to worry about

lol absolutely, but I like to learn as I go