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How to fix water damaged plaster in walk in cupboard

Postby ddmuir » Fri Dec 28, 2018 10:38 am

I recently bought an old house (200-300 years old). I have a large walk in cupboard which has crumbly plaster (the bottom 50-100 cm) with black mould on parts of it. (the problem wall is an outside wall with some shrubbery growing against it) I have scraped off all the loose plaster (it has a reddish colour to it), but have not gone back to the brickwork. What is left is powdery (if you rub it, it comes off a bit like sand). I have also scrubbed the area with mould killer to get rid of the black mould. Should I wash it with a PVA/water mix to reseal the powdery plaster? If I do that can I then put new plaster on top, if so what type?
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Postby SmokeyBacon » Fri Feb 15, 2019 12:17 am

chip it off mate, buy some tanking and paint it on 3 coats, then use a moisture plasterboard (stick it on with board adhesive) after dry youn can skim, tile, or paint the board :)
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