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Prepping? (Read 12833 times)
The_Trician
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Prepping?
Oct 3rd, 2005, 11:06am
 
New w/shop - internal walls are bare thermalite blockwork. Was given a large 'trade tub' of emulsion and was thinking of rollering this onto the walls.

Question - how to prep beforehand - Will it be ok to just mix up a solution of PVA and roller this onto the walls to seal first, then paint directly over the top in emulsion?

Ta

TT
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hammy
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Re: Prepping?
Reply #1 - Oct 3rd, 2005, 4:41pm
 
TT
Methinks the PVA will just form a skin on the blocks as opposed to soaking in a bit.  The paint will then be sitting on the PVA.

I think I would thin the emulsion out a bit for the first coat. Don't know how big your workshop is, but the emulsion won't go very far, so be prepared to get some more.
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The_Trician
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Re: Prepping?
Reply #2 - Oct 3rd, 2005, 5:07pm
 
Got a 5 gallon tub! Should this be enough?

W/shop is roughly the size of a single garage.

Ta

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hammy
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Re: Prepping?
Reply #3 - Oct 3rd, 2005, 7:33pm
 
Job done!  Grin
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sailfishoney
Re: Prepping?
Reply #4 - Oct 4th, 2005, 3:45am
 
What is PVA? I here that so much on the forums.
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hammy
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Re: Prepping?
Reply #5 - Oct 4th, 2005, 4:29pm
 
At the end of the day (as they say) it is a water based glue.  Many people think that you can use it to seal new plaster prior to painting, which is of course wrong, as it will form a skin and the plaster will not be able to 'breathe'. The paint will then sit on top instead of soaking into the plaster.

Some people seal old plaster with it (diluted) prior to hanging wallpaper. Personaly I have never done this so will not comment on it's efficacy.

I believe the wet trades bang some in their muck as a binding agent, other trades will no doubt comment on that.

I never use the stuff as I don't think it has any use for a decorator.

Bye the way Cait, I have always thought PVA stood for Poly Vinyl Acetate, but I could be wrong on that.  Undecided
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billythekid
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Re: Prepping?
Reply #6 - Oct 4th, 2005, 8:28pm
 
congrats on 100 posts sfh, and pva is like y'alls wood glue.
(in fact its like ours too isn't it?? lol)
btk
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CWatters
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Re: Prepping?
Reply #7 - Oct 5th, 2005, 1:40pm
 
[quote author=sailfishoney  link=1128333989/0#4 date=1128393944]What is PVA? I here that so much on the forums. [/quote]

It's a type of water based glue. Typically used for gluing wood or paper. Usually white but dries almost clear in thin layers. Not all types are waterproof so best used indoors.

Google says...

http://palimpsest.stanford.edu/don/dt/dt2639.html

polyvinyl acetate
A vinyl resin, one of the clear, water-white, thermoplastic synthetic resins produced from its monomer by emulsion polymerization. Polyvinyl acetate, abbreviated PVA , has the advantage over the other resinous adhesives in that it is available in the form of an emulsion that is readily diluted with water, is easily applied, and is safe to use because it contains no flammable solvents. In addition, there is no need to use preservatives or fungicides because it does not deteriorate quickly and is unaffected by mold or fungi. The emulsion does slowly hydrolyze, however, and should not be stored for more than one or two years before use. Freezing also destroys the emulsion; therefore, precautions must be taken to avoid exposing it to temperatures near or below the freezing point.
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« Last Edit: Oct 5th, 2005, 1:41pm by CWatters »  
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Chaddy
Re: Prepping?
Reply #8 - Oct 5th, 2005, 9:27pm
 


Quote:
polyvinyl acetate
A vinyl resin, one of the clear, water-white, thermoplastic synthetic resins produced from its monomer by emulsion polymerization. Polyvinyl acetate, abbreviated PVA , has the advantage over the other resinous adhesives in that it is available in the form of an emulsion that is readily diluted with water, is easily applied, and is safe to use because it contains no flammable solvents. In addition, there is no need to use preservatives or fungicides because it does not deteriorate quickly and is unaffected by mold or fungi. The emulsion does slowly hydrolyze, however, and should not be stored for more than one or two years before use. Freezing also destroys the emulsion; therefore, precautions must be taken to avoid exposing it to temperatures near or below the freezing point.  

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Wink
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woodsmith
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Re: Prepping?
Reply #9 - Oct 6th, 2005, 10:03am
 
[quote author=Chaddy  link=1128333989/0#8 date=1128544034]

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Wink [/quote]


Roll Eyes Grin

See what make one person doze off can be of interest to someone else, namely me... I didn't know PVA had a one year shelf life, thanks for that Colin
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JerryD
Re: Prepping?
Reply #10 - Oct 6th, 2005, 6:48pm
 
[quote author=CWatters  link=1128333989/0#7 date=1128516042]



polyvinyl acetate
A vinyl resin, one of the clear, water-white, thermoplastic synthetic resins produced from its monomer by emulsion polymerization. Polyvinyl acetate, abbreviated PVA , has the advantage over the other resinous adhesives in that it is available in the form of an emulsion that is readily diluted with water, is easily applied, and is safe to use because it contains no flammable solvents. In addition, there is no need to use preservatives or fungicides because it does not deteriorate quickly and is unaffected by mold or fungi. The emulsion does slowly hydrolyze, however, and should not be stored for more than one or two years before use. Freezing also destroys the emulsion; therefore, precautions must be taken to avoid exposing it to temperatures near or below the freezing point.
[/quote]


This is most interesting, I shall learn this 'off by heart'.

That way I will no longer be boring at parties.  If things get a little slow I shall just say "Anyone interested in PVA?"..................

Grin Wink
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woodsmith
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Re: Prepping?
Reply #11 - Oct 6th, 2005, 6:58pm
 
[quote author=JerryD  link=1128333989/0#10 date=1128620923]
This is most interesting, I shall learn this 'off by heart'.
[/quote]


Glad I'm not the only one Wink, and the Christmas season will soon be upon us, with all those parties and opportunities to impress with our knowledge of PVA  Grin
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hammy
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Re: Prepping?
Reply #12 - Oct 6th, 2005, 7:56pm
 
I don't think you are taking this seriously.  Wink
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JerryD
Re: Prepping?
Reply #13 - Oct 6th, 2005, 7:57pm
 
[quote author=woodsmith  link=1128333989/0#11 date=1128621494]


Glad I'm not the only one Wink, and the Christmas season will soon be upon us, with all those parties and opportunities to impress with our knowledge of PVA  Grin [/quote]


Too right!

I'm going to 'gen up' on Gripfill too, that way I'll be the 'life and soul' of any gathering.............

Grin Wink
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Chaddy
Re: Prepping?
Reply #14 - Oct 6th, 2005, 10:26pm
 
[quote author=JerryD  link=1128333989/0#13 date=1128625033]


Too right!

I'm going to 'gen up' on Gripfill too, that way I'll be the 'life and soul' of any gathering.............

Grin Wink [/quote]

Grin Grin Grin  Lol
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Lurch
Re: Prepping?
Reply #15 - Oct 6th, 2005, 10:32pm
 
[quote author=woodsmith  link=1128333989/0#9 date=1128589381]I didn't know PVA had a one year shelf life, [/quote]

Me neither. I'd better start glueing stuff together quick before this large tub of PVA goes off.
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JerryD
Re: Prepping?
Reply #16 - Oct 7th, 2005, 12:14am
 
Does PVA have a date on it then?  I've never noticed one.

It could have been on the merchants shelf a year before you buy it?
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