I want to put some new plasterboard on an already plasterboarded wall in the bathroom. The wall that I want to plasterboard over is made of the double layer plasterboard with honeycomb cardboard centre and is a dividing wall for the bathroom and bedroom, it is full of holes from shelves/ cupboards and is painted with several layers of bathroom paint. One side of the same wall (just over half the length) will be Aquapanelled for a quadrant shower and the bit to be re-plastered will have a new radiator on it but no more cupboards or shelves.

Has anyone had to do this before?
Am I right in thinking that I could batten the part to be plasterboarded and screw new plasterboard to it? I'm thinking that it'll be the easiest option as the bathroom side of the wall is full of holes and I don't want to demolish the wall and build another stud wall.

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Hi Louise,

is the wall that you intend plastering over already a stud partition wall?

If it is you can just screw the new plasterboard to the existing studs in the partition.

If you do have to use battens it will reduce the size of the room slightly.

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Hi Chez,

The wall is constructed like the other wall that we removed. It's like a honeycomb of cardboard sandwiched between two sheets of plasterboard with the timber verticals on the ends and top and soleplate timbers that it sits on and is secured to. I just thought that since it has so many holes and filled holes that it'd be stronger if a new plasterboard was secured to it and skimmed for tiling. the trouble is that (as you look at it) to the right hand corner is a boxed in soil pipe and the existing plaster is hidden behind it in the corner, so there'd be no timber to screw into as it's hidden.

How thick a batten would you need, it wouldn't be that thick would it? I'd have to attach the Aquapanel to the other end of the same wall anyway (for one side of the quadrant shower), so I suppose aesthetically it'd be better with longer lengths of batten and then the Aquapanel would be the same depth as the plasterboard, making it easier to tile straight across.
I hope that makes sense.

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