Building interior wall, attaching framework without stud to attach to

[neoeip]

I am going to divide a bedroom into two smaller bedrooms.

I plan to build the wall with metal studs and single drywall with insulation in between. I will also run fiber down the wall so that it is available in both rooms afterward.

I plan to saw up the existing floor where the new wall will be. The new door for the additional room will be located in an already existing wall section. I just need to install some wooden studs there.

But the problem is that I want to place the new wall where there is no stud in the existing walls or ceiling (so it ends up between studs). How should I attach my framework for the new wall appropriately? Molly plug? Something else?

Any tips for boxes that fit well with a recessed fiber outlet with 2 outlets?

Thanks in advance!

 

[Johan_86]

Try to find the joists in the ceiling, which will be crosswise, and attach to them. How you attach to an existing wall is trickier if it's not studded. Is it drywall+OSB? If so, it should be enough to glue a metal stud against any drywall and simultaneously screw it into the OSB, but someone more experienced will need to confirm if that's good enough!

 

[neoeip]

The roof joists are aligned in the same direction as the wall I plan to build, so they don't hit any joist anywhere. However, I can go up to the attic and maybe fit a joist there now that I think about it. The walls are just single gypsum on metal studs, so to attach a joist, some tinkering is needed.

But since it's a wood beam floor (the wall is going to be on the upper floor), I should be able to fasten downwards without a joist in the floor, and if I can fit a joist from the attic, then I'll have one above as well. Maybe that's enough?

 

[Johan_86]

the roof beams are in the same direction as the wall to be built, so no beam hits anywhere. However, I can get up into the attic and maybe get a beam there when I think about it. The walls are just single plasterboard on metal studs. so if I am to get a beam there, it's going to require some tinkering.

But it is a träbjälklag (it's on the upper floor where the wall will be), so I should be able to attach downwards without a beam in the floor, and if I can get a beam from the attic, then I have one at the top as well. That might be enough?

A slip-up regarding the roof beams. But yes, if you can insert a few noggings from the attic, you should achieve good stability. Glue the floor beam with PL400 or TEC7 and screw into the subfloor, and it should hold fast. PL400 or TEC7 should work really well for both wall and floor.

May I ask why you are choosing metal, soundproofing? I don't have much experience with metal studs as I've only built one bathroom in a basement. But there I used cc30 with 70 studs, although I felt the wall wasn't as rigid as with wood. Against the outer wall, it turned out really well, but for the standalone wall, I wasn't satisfied...