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Old 03-11-2008, 08:49 PM
E.Tutt E.Tutt is offline
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What is PVA glue?

Okay, this is probably a dumb question that everyone knows the answer to. What is PVA glue? I read in threads that we can use PVA glue instead of RSG as a size. Is it just plain old Elmer's glue? Is it regular wood glue that can disolve in water? If I want to get PVA glue what do I get and where?

I did a search and I didn't find the answer. Thanks
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Old 03-11-2008, 08:56 PM
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pinkpetunia pinkpetunia is offline
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Re: What is PVA glue?

Well, it's simply ordinary
"white" glue. The PVA means Poly Vinyl Acetate. "Yellow" glue is
also PVA (modified).

Here in the U.S., the most common brand is "Elmer's Glue-All"

Jerry Seinfeld has a good glue-related line in his act:

"They make glue out of horses and cows, but I wonder how they find
the sticky ones??" :-)
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Old 03-11-2008, 08:58 PM
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Re: What is PVA glue?

I'm sure there are other companies that make PVA glue, the only one I know of off hand is Gamblin and here is the blurb from their website:

Quote:
POLY VINYL ACETATE (PVA) SIZE
Diluted with distilled water, PVA size is a contemporary size for fabric support. Conservation scientists recommend painters use neutral pH PVA size on linen and canvas instead of rabbit skin glue. PVA provides a good size layer that seals the fabric but does not re-absorb atmospheric moisture, swell and shrink like rabbit skin glue does. There are hundreds of different formulae of PVA. We acknowledge and appreciate the research of the Canadian Conservation Institute that helps painters and conservators identify the best PVA to use. Gamblin PVA Size is made from PVA that has a neutral pH and does not yellow. It also retains its flexibility and does not emit harmful volatiles.

Don
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Old 03-12-2008, 01:21 PM
E.Tutt E.Tutt is offline
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Re: What is PVA glue?

Thanks- Do you actually use Gamblin's PVA size Don?

I read somewhere that Elmer's contains cornstarch and that is bad.

If I get a generic "white" glue am I supposed to thin it with distilled water? What will well water do to it (I use well water when I make RSG, is that bad too?)?

Pinkpetunia - do you use Elmer's for size?
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Old 03-12-2008, 02:20 PM
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Re: What is PVA glue?

Elmer's Glue should not be used as a size. It does not remain flexible and is not a high quality PVA like the one Gamblin sells. Elmer's Glue is a cheap PVA that is not intended to be used in archival work. I would stick to using materials that are made specifically for use by artists.
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Old 03-12-2008, 02:36 PM
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pinkpetunia pinkpetunia is offline
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Re: What is PVA glue?

no, I don't use elmers for size.I've just always thought that PVA was elmers.
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Old 03-13-2008, 12:11 PM
E.Tutt E.Tutt is offline
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Re: What is PVA glue?

The idea of sizing with Elmer's gives me the hebejebees. Afterall, been using it since I was a kid gluing construction paper.

I've got some birch plywood panels and I wanted to size them first, before applying acrylic gesso - maybe glue some linen or polyester to some. Wanted to get away from RSG due to hydroscopic nature in humid climate. So far I've just heard that Gamblin makes a good PVA glue. Maybe I'll just use an acrylic medium?
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Old 03-13-2008, 02:08 PM
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Re: What is PVA glue?

Yes, in general, acrylics are more durable and archival than PVAs any ways. I would recommend two coats of Golden's GAC 100 as the best acrylic size. If you want to stiffen the fabric, then first apply two coats of GAC 400. Golden has detailed information on their website: http://goldenpaints.com/technicaldata/prepsupp.php
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Old 03-15-2008, 09:39 AM
E.Tutt E.Tutt is offline
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Re: What is PVA glue?

Thanks Brian!
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