VisionSet wrote:
"VisionSet" wrote in message
...

"VisionSet" wrote in message
...

Todays finish was a disaster. About 70% just wouldn't stick,
blowing off left right and centre.


I needed to PVA it first, now I'm back to happy plastering.

or skim it in the same day as bonding/browning is applied....this 'blowing
off' is actually the backing ( bonding/browning ) sucking the moisture out
of the skimming where it meets, the outer surface (facing the room interior)
of the skimming is still wet and so it peels away....another alternative is
to drench the wall beforehand, but even this is not always enough and it
becomes apparent when final trowelling and bubbles appear to spring out at
random.
PVA will cure most of this, but not all.