dot and dab over over plasterboard

[olyboy123]

Hello,

I was attempting to repair my old torn plasterboard walls ready for re tiling but it's too much work so I want to dot and dab over the old plasterboard with new board.

Do I need to seal it with anything before? It's pretty torn up. I cant remove the old stuff as it's been dot and dabbed straight onto the brick work.

Thanks very much

 

[olyboy123]

Or should I screw the new plasterboard into the old stuff?

 

[dhutch]

Continuous bead around the edge anda ll fittings.....



I would stick it (dot&dab or otherwise) if if the old is firm but also try and get some screws in.


Daniel

 

[olyboy123]

thanks very much, should I PVA the old surface first?

Cheers

 

[dhutch]

No, I wouldnt anyway, pva is not a solve-all-issues 'all jobs are better with than without' type product. Its actually fairly naff.

Is this in a bathroom or shower?



Daniel

 

[notfilc]

Would it not be easier to just replace those boards?