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PVA

 
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djc
Junior Member


Joined: 29 Apr 2008
Posts: 13
PostPosted: Mon Aug 25, 2008 2:03 pm    Post subject: PVA Add User to Ignore List Reply with quote
Hi,

Should I PVA a wall before applying bonding and likewise, do I need to then apply PVA to the bonding once dry before skimming over it?

All help welcome

Cheers
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adm.plastering
Junior Member


Joined: 26 Aug 2008
Posts: 3
Location: glasgow
PostPosted: Tue Aug 26, 2008 4:27 pm    Post subject: Add User to Ignore List Reply with quote
Yes you need to pva the wall before and once dry. make sure the PVA is mixed 2 to 1.
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rubber_hammer
Senior Member


Joined: 18 Nov 2007
Posts: 141
PostPosted: Fri Aug 29, 2008 8:42 am    Post subject: Add User to Ignore List Reply with quote
You can skim perfectly well without PVA if you do it while the bonding is still wet (but has set) - it takes a good while to dry out completely anyway - that way you shouldn't need to apply PVA before skimming.
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djc
Junior Member


Joined: 29 Apr 2008
Posts: 13
PostPosted: Thu Sep 04, 2008 11:08 am    Post subject: Add User to Ignore List Reply with quote
thanks very much.

so pva is basically way of keeping the wall from drying out too quickly on dry walls that absorb the moisture quickly, am i correct?

so taking that into account, is it right to pva over old plaster walls that are just to be re-skimmed? and does plasterboard on a celing also need pva?

thanks for all help
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skiking
Senior Member


Joined: 13 Sep 2006
Posts: 3086
Location: Cheshire
PostPosted: Fri Sep 05, 2008 12:15 pm    Post subject: Add User to Ignore List Reply with quote
Correct

PVA over old plaster Thumbright

DON'T PVA over Plasterboard - its already treated.
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Loaded-Dice
Junior Member


Joined: 31 Aug 2008
Posts: 3
PostPosted: Sun Sep 07, 2008 8:40 am    Post subject: Add User to Ignore List Reply with quote
Exactly right mate. The term we generally use is "killing suction". PVA is a plasterers best friend! Apart from his labourer of course. And his trowel. And maybe a Bacon & Egg.
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