(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't help)
Should the PVA be put on long before plastering to give it chance to dry -
or should it be applied immediately before plastering?


--


--
John

"John" wrote in message
...
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't
help)
Should the PVA be put on long before plastering to give it chance to dry -
or should it be applied immediately before plastering?


--


--
John



Doesn't matter although some plasterers prefer a splash on the wall before
the plaster ie wet.
PVA was primerily to seal any dusty brickwork.

John wrote:
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't help)
Should the PVA be put on long before plastering to give it chance to dry -
or should it be applied immediately before plastering?

I diluted the PVA (3 water, 1 PVA) and let it dry before plastering or
painting.

As I understand it, the PVA can be used for two tasks :

consolidate (sp?) loose/dusty surfaces before plastering
seal plaster before painting

When consolidating I used more PVA in the mix than when sealing.

YMMV!

Guy
-- --------------------------------------------------------------------
Guy Dawson I.T. Manager Crossflight Ltd

In article ,
Guy Dawson writes:
John wrote:
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't help)
Should the PVA be put on long before plastering to give it chance to dry -
or should it be applied immediately before plastering?

I diluted the PVA (3 water, 1 PVA) and let it dry before plastering or
painting.

As I understand it, the PVA can be used for two tasks :

consolidate (sp?) loose/dusty surfaces before plastering

And also to glue the plaster to a surface it won't stick to
otherwise (PVA should be still slightly tacky when plastering
in this case).

seal plaster before painting

No, never do that with PVA.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

"John" wrote in message
...
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't
help)
Should the PVA be put on long before plastering to give it chance to dry -
or should it be applied immediately before plastering?


PVA should be applied just before plastering and allowed to go tacky (20mins
or so)
If plastering is done too soon after, it'll be sliding all over the place.


mark

"Mark" wrote in message
...

"John" wrote in message
...
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't
help)
Should the PVA be put on long before plastering to give it chance to
dry -
or should it be applied immediately before plastering?


PVA should be applied just before plastering and allowed to go tacky
(20mins
or so)
If plastering is done too soon after, it'll be sliding all over the
place.


mark



PVA is almost dry 2minutes after the application.
If you're having problems with the plaster sliding all over the place? its
because you mixed it wrong.

"George" wrote in message
.uk...

"Mark" wrote in message
...

"John" wrote in message
...
(was "Blown Plaster)

Bought some plaster and some PVA - question - (The instructions don't
help)
Should the PVA be put on long before plastering to give it chance to
dry -
or should it be applied immediately before plastering?


PVA should be applied just before plastering and allowed to go tacky
(20mins
or so)
If plastering is done too soon after, it'll be sliding all over the
place.


mark



PVA is almost dry 2minutes after the application.
If you're having problems with the plaster sliding all over the place? its
because you mixed it wrong.



Thanks - done it today - PVA a few minutes before (whilst I mixed the
plaster).