The Letterville BullBoard: Gold Leaf on PVC

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Posted by Janette Balogh (Member # 192) on :

Can you gild PVC board? How would I attack this?
I'm thinking just scuff, paint, size and gild.

Sound about right?
Anything else I should know?
Just checking.
Thanks!
Nettie

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Posted by Mark Fair Signs (Member # 289) on :

nettie,
i guess it all depends on exposure.
i really don't know if i would trust goldsize on PVC.

if it is for interior use, i would say go for it.

i think the idea about scuffing up the PVC to add tooth is a good idea.

maybe some of the gold leaf specialist here can give you more insight.

just a humble opinion,

mark

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Mark Fair

Mark Fair Signs
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Posted by George Perkins (Member # 156) on :

I did some shields for the fire department to use on their speaker podiums. I cut them in the shape I wanted, sanded the edges, scuffed with a scothbrite pad, and primed with Krylon ( the pvc suppliers reccomendation ) finish coated and then sized and gilded. No problem.

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George Perkins
Millington,TN.
goatwell@ixlmemphis.com

"I started out with nothing and still have most of it left"

Posted by Ross Luckhurst (Member # 703) on :

Well I just learned something yesterday, newbie mistake really. Don't use Oneshot to coat PVC, it caused the panel to curl up like half a water pipe!

So I guess I pobably would'nt use Oneshot gold size.

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Ross Luckhurst
AKA Scolt on Chat
DIGISIGN
Woodstock, Ontario, Eh!
digisign@netcom.ca

Posted by Brad Ferguson (Member # 33) on :

Krylon makes a good base on PVC, as already mentioned. I would expect Frog Juice to do the same. Whatever works on vinyl (polyvinylchloride, PVC), should work on PVC board.

Brad in Arkansas.
It's going to be another day of being 'rendered down.'

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signbrad@cswnet.com

Posted by Jean on :

We have been using acrylic latex paint on pvc. Scuff and spray or roll with soft nap roller. So far, it's been working outside (about a year-signs still look good).

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Posted by Rick Sacks (Member # 379) on :

Nettie,
Do you have any Ti-Cote or one of those pure acrylics we use to make banners enamel receptive? That's what I'd prime with, andd follow with oil size and the normal gilding procedure.
PS. You can add a couple drops of universal tint to a tad of the acrylic so you can see what areas you covered. And it dries in half an hour

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the codfish never cackles to tell you
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Posted by VICTORGEORGIOU (Member # 474) on :

Janet..we have done some adventuresome projects with PVC and so far we are either really clever or dumb lucky or somewhere in between.

PVC grows and shrinks with temperature more than most other sign products, and that is the one thing to be careful of.

We have coated out PVC letters with Signgold and they look normal after three years of service. We have coated out PVC signs with latex paint over a PVC primer, and that seems to hold up in California weather.

My theory would be that gold leafing for interior duty would be just fine. I would worry about brittle gold cracking and failing due to the PVC expansion.

This may sound goofy, but what you can do is gold leaf a 6"by6" piece of PVC and then thermal cycle it, two hours in the freezer, two hours in a 100 degree oven (or two hours in full sun),back and forth a half dozen times or so. I would think that gold is so brittle that it would fail quickly. Look at it with a magnifying glass before you start and after each cycle.

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Victor Georgiou
Bob Loves Signs
Danville, CA
email blssigns@verio.com

Posted by stein Saether (Member # 430) on :

If acrylic sticks to pvc; you could use the
acryl size
And, It wont crack either

However, It must be placed out of reach for touching,cause it is very weak and easy to scratch

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Stein Sæther
GullSkilt AS
Trondheim
ICQ 8219044

Posted by Brad Ferguson (Member # 33) on :

Victor G.,

What kind of PVC primer have you used?

Brad in Arkansas

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signbrad@cswnet.com

Posted by VICTORGEORGIOU (Member # 474) on :

We went to the local Kelly Moore Paint store and asked for an exterior rated PVC Primer. They had one for interior also.

I don't remember the exact name on the can, but there was a long list of things this stuff would prime including PVC.

If you don't have Kelly Moore there, go to wherever the painting contractors get their paint. I would guess that all the big boys have something similar.

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Victor Georgiou
Bob Loves Signs
Danville, CA
email blssigns@verio.com

Posted by Kent Smith (Member # 251) on :

Gold Leaf is malleable and therefore will stand the expansion and contraction of the PVC. Stick to pure acrylics for the coatings, not acrylic lacquers for the same reason.

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Kent Smith
Smith Sign Studio
Greeley, Colorado, USA
oldgilt@aol.com

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