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Plastering
Should i use pva on scatch coat (6.1.1), before i use a lime putty finish, or just dampen with water?? cheers...
PVA or water, been told told both way's by other plasterer's?
8 Answers from MyBuilder Plasterers
Best Answer
Diss • Member since 21 Feb 2011 • 143 jobs, 100% positive feedback
Lime plastering is a total different ball game to modern plastering, if you mean PVA modern cement and sand based render coat, its not the way to it should be a lime base coat...its no good just using lime putty it will just crack up even on the correct base coat....mix should be St.Astier NHL hydraulic lime mix with kiln dried sand 3 parts sand to one lime and a couple of trowels full of putty mixed for about half an hour....putty is normally only used for a lime wash mix...
Answered 26th Feb 2011
Borehamwood • Member since 26 May 2010 • 171 jobs, 100% positive feedback
no way .never put pva on any scratch coat.
Answered 28th Feb 2011
Southend • Member since 14 Aug 2009 • 111 jobs, 100% positive feedback
High Wycombe • Member since 23 Mar 2009 • 355 jobs, 100% positive feedback
just spray some wother mate if u have watherproofer in the scratch coat
Answered 26th Feb 2011
Manchester • Member since 3 Sep 2010 • 1 job, 100% positive feedback
don't use the pva,just dampen with water you should have no problems.
Answered 26th Feb 2011
Cheltenham • Member since 29 Oct 2008 • 34 jobs, 100% positive feedback
As ppm said, just wet with water.
If you were using sand/cement and wall was porous I woulnt use pva, I would give it a coat of sbr slurry
Answered 26th Feb 2011
Middlesex • Member since 17 Mar 2016 • 8 jobs, 100% positive feedback
Water should be fine not pva or you will have problems
Answered 4th Feb 2017
Whalley • Member since 2 Nov 2010 • 1 job, 100% positive feedback
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