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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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painting plaster walls
Hi All Can I ask some advice? I'm trying to paint over a plaster wall
that has been damp in the past. The cause of the damp was fixed a couple of months ago but the paint just forms blisters of dry white powder and leaves the wall looking like the surface of the moon. How can I stop this? Any tips? Sam |
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In article .com,
"sam" writes: Hi All Can I ask some advice? I'm trying to paint over a plaster wall that has been damp in the past. The cause of the damp was fixed a couple of months ago but the paint just forms blisters of dry white powder and leaves the wall looking like the surface of the moon. How can I stop this? Any tips? Sam What was the cause of the damp? If it was coming through the plaster from behind, it tends to carry soluble salts with it, which then concentrate and crystalise out as a white powder on the wall. This might well interfere with the paint. You could try washing with copious water and allowing to dry, but usually the area is replastered before redecorating. Otherwise, what's the state of the wall you are painting onto, and what paint are you using? -- Andrew Gabriel |
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