My brother has dampness on three sides of a wall which is between his front room and dining room, all sides are flaking and have serious dampness issues. I know that damp will only travel 1.5 meters up and then stop and I want to ask this question regarding the wall.
Can I score all three walls about 6 inches above the last lot of dampness, then chip away at the old plaster until all the brickwork is revealed, then clean the brickwork with a good wire brush, treat all sides with a sealer, and this is where I am stuck as I have seen many items that can be added to the wall to stop damp from rising, so is it easier to put the membrane on the wall then add the plasterboard, or is there another option were it can be done.
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