I am about to take the plaster off a wall in my convertion, it is literally just falling off at the moment. I was going to just dab and dob new plasterboard up but it appears to have a waterproof membrane underneath it. I have no idea why it is there as the wall already has a damp course, but it must be up there for a reason. Can anyone advise me what I should use to replace this old damp proof membrane? and how to go about putting plasterboard over the top of it. I am also having issues with uneven joists for the ceiling so I figure its best to get this wall fixed before I level the joists. Any advise much appreciated
if you have a membrane on th wall you have proberly got a rising damp or damp issue from the past. You can either clean to wall back to the bricks and tank the walls ( paint several coats of bitumin paint) and replaster( remember to throw sand on the last wet coat of bitumin to create a 'key' for the render coat. Or tank the wall and build a stud wall and line with foil back plasterboard (vapour board) and skim ( use treated timbers) Good luck
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