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PostPosted: Mon Apr 03, 2017 2:17 pm 
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After giving the walls in my bedroom 3 coats of silk. I decided to use a bit more paint and give it one final coat. However, on one wall it started to develop blisters in the paint. Small bubbles. Very annoying. It only happened on one wall. No idea why or how it happened. Think I'll have to rub it down and try again.

Why does this happen? And what's the best remedy?


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PostPosted: Mon Apr 03, 2017 4:52 pm 
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How long since you painted the last coat? Sometimes blisters appear but are gone the next morning.

It is caused by one of the layers of paint not sticking to whatever it underneath it. Because your three coats were all the same paint, it is likely to be the paint that was under your first coat. The original paint might have been put on without giving the new plaster a mist-coat first. Has that one wall been replastered to your knowledge?


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PostPosted: Mon Apr 03, 2017 5:32 pm 
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... and if the three coats were quickly put one on top of the other plenty of moisture to bother the original paint. On a separate note I have had the small bubbles on unprimed or badly primed filler (ooops, live and learn).


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PostPosted: Mon Apr 03, 2017 6:19 pm 
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I once had bubbles after a coat of Dulux Trade Vinyl Matt going on top of Gardz that I had put over the original silk. There were loads of them, some of them as big as saucers. The next morning they were all gone. It happened after the second coat too. I explained what had happened to the customer and called her the next morning and she said the second lot had all gone too.


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