Subfloor boards on the entire joist before or after interior walls?

[Slyman]

Hi, maybe a dumb question but I'm a bit unsure about something.

Working on a 1.5-story house and I'm about to start with the upper floor. Right now, there are only beams there with insulation between them.

I wonder if you should first lay the 22mm chipboard flooring and then the "sill" for the interior walls, meaning the sill above the chipboard flooring.

Or do you first place the sills for the interior walls and then fit the chipboard flooring? So that you install the chipboard flooring in each room separately up to the sill.

I don't know if you understand, but let me know if you need clarification.

Best regards, Stefan

 

[mexitegel]

To avoid so-called flank transmission, you should have your own floor and ceiling in each room. Nail the entire framework first, in other words, and then gypsum and chipboard in each room.

 

[Gabbe1]

I completed the entire roof and all the plank flooring before installing the interior walls.
Must be by far the easiest way.

 

[grävaren]

We did the same, but separated the bathroom's floor chipboard from the rest of the upper floor. I read somewhere that it should be like that.

 

[JanneL]

I can only agree with mexitegel. If you don't want footsteps, etc. to propagate into the rooms, you must frame the inner walls before laying the floor chipboard.

 

[ante75]

Maybe a stupid question, but what do you build the stud walls on if the wall runs along the floor structure and in between the floor joists?

 

[estwing]

man cheat in between!!!

 

[Jerka_l]

Feels a bit overkill to lay floorboards separately in each room. Usually, at least in new constructions, the chipboards are placed, and the ceiling is spaced before erecting the interior walls. This way, it’s both easy to mark where the interior walls should be and to attach them. If it's an old house with uneven beams, it might be easier to lay room by room if the floor and ceiling need leveling.

 

[mexitegel]

Feels a bit overkill to lay floorboard separately in each room. Usually, in new constructions, the floorboards are laid and the ceiling grids are installed before the interior walls are erected. This way, it is both easy to mark where the interior walls should be and to attach them. If it's an old house with uneven beams, it might be easier to lay room by room if you need to level the floor and ceiling.

Overkill and overkill, it depends on what you want to achieve. You are absolutely right that it goes much smoother to lay all the floorboards before the walls are framed. But as I pointed out in a previous post, there is then a risk for a noisy house. But like everything else in life, it's about trade-offs

 

[Intershade]

Reviving this thread as I am having the same thoughts.
Laying chipboard over the entire joist structure before putting up the walls?
But my main concern is about soundproofing.
Does anyone have experience with a joist structure where chipboard is laid over the entire joist before the walls, and find it to be noisy because of it?

Also, has anyone built walls on slotted chipboard panels?

 

[Wennbergp]

Raising this thread again. I'm in the process of furnishing the attic and will be installing underfloor heating. Can I lay the slotted chipboard flooring and then erect the interior walls? Or do I need to put the walls up first and install the underfloor heating room by room?

Best regards, Peter

 

[HogeN]

Reviving this thread again. I'm in the process of furnishing the attic and planning to install underfloor heating. Can I lay the grooved subfloor panels and then build the interior walls? Or do I need to set the walls first and install the underfloor heating room by room?

Best regards, Peter

floor then walls.

 

[Plupp 122206]

The floor first, but ensure that the interior walls are not just standing on floor chipboard.

 

[Wennbergp]

Sounds good and feels simpler to be able to lay all the flooring in one go. Will need to kortla where the walls are to be erected. Walls for the bathroom will probably be erected standing on the joists as it won't have the same flooring there.
Best regards, Peter