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sheslostcontrol 12-21-2010 11:37 PM

Adding a partition wall
I'm subdividing a 32x16 room above my garage into two 16x16 rooms. The area is currently unfinished - just OSB flooring & 2x4 studs along the exterior.

The work will be inspected, so I want to make sure I get it right the first time.

How is an interior partition tied into an existing wall? Do I have to double up on studs on the existing wall? Are there certain metal plates I should use to connect the new partition with the existing unfinished wall?

CplDevilDog 12-22-2010 06:25 AM

Need more info
Is the ceiling flat or sloped?

Typically, partition walls are tied into exterior and bearing walls with a "par" assembly. Short for partition, it is two 2x4 studs with a spacer stud between. It would look like a "U" with the bottom of the "U" facing into the room. The partition wall is tied into the bottom of the "U" and the sides act as nailers for your drywall.

16d common nails are adequate, toenailed front face and sides.

Alternative is to use 2x4 blocking running horizontal between two existing studs.

sheslostcontrol 12-22-2010 07:20 AM

Ceiling is flat.

So I want an area of about 6" (less with actual width of 2x4) to butt my partition against? Or do you mean the boards should go like this


With the bottom line being the 4" side of a 2x4?

CplDevilDog 12-23-2010 07:35 AM

Your diagram is correct. The total width across the bottom should be 6.5". Center you partition and you will have 1.5" nailers in the corners for your drywall

sheslostcontrol 12-23-2010 07:53 AM

I will be using staggered studs on a 2x6 header/footer.

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