Do I have to apply PVA Glue before repairing a patch of blown plaster

23 Feb 2020
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United Kingdom
HI all
I know this is a stupid qustion but do I have to PVA before repairing a patch of plaster which has blown off wall due to a leak (which is now repaired).
The patch is about 8inch square.
Now for the next stupid question if the answer to first question is yes can I use childrens PVA glue?
Sorry for silly questions but really need advice
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Yes and yes.
Add water to pva.. 3-1 ish will do it
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Just make sure the 'blown area is as localised as u think. Its unusual for such a small area of plaster to blow

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