Can anyone clarify why some shops sell 50mm thick studs, while others sell 38mm ones? I'm having a hard time finding explanations for this.
Some sites even list both sizes!
I need to build a stud wall on my existing brick party wall and been told to use 50mm and I don't know what to buy now. 🙂
Best Answer
Timber is dimensioned in 'nominal width' which means the size it is sawn to when it's processed. Studs are finished by planing, which reduces the nominal width to the actual physical width you'd measure when you installed it.
This webstore's description makes a bit clearer. It specifies that a nominal 50x75mm stud is reduced to 38mmx63mm by planing to produce a smooth surface.