How to straighten an old lath and plaster wall

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Hi. I've just stripped 2 lath and plaster walls, where the plaster was badly blown. I've taken them both back to the studs and packed the cavities with insulation.

One of the walls (left in the pictures) isn't perfectly vertical. It's difficult to see in the pictures, but I've hung a plumb line from a screw in the top plate. The door frame is pretty much plumb. The studs lean outwards. At the top, they're a little under 50mm out of line with the bottom.

Before I attach plasterboard, I thought I'd take the opportunity to make the wall vertical and add some soundproofing.

Can anyone advise on the best way to pack out the studs? Should I use horizontal battens at regular intervals, starting with a 50mm batten attached to the top plate and reducing the thickness as I work my way down? Or is there a better way?

Once I've added the battens, I'm planning to add a layer of mass loaded vinyl and then acoustic plasterboard. I think it's probably best to straighten the wall first, then add the MLV, unless there's a better way of doing it.

Grateful for any advice. Thanks.

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Last edited:
Get hold of some old chipboard wardrobes (or buy some cheap stuff) and rip them down into long strips and screw them to the sides of the studs. Screw your plasterboard into the studs 25mm away from the chipboard.
 

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