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Old 02-27-2020, 12:18 PM   #1
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Default Poly over lacquer or shellac?

I need to put a more durable finish on a dining table that has white cup rings. I think I can remove the white and want to put on a top coat of wipe on poly. I wonder what people think of my idea to give a light sanding with 400 grit carbon paper and applying the poly over the existing finish. I really do not want to get into the expense of stripping for a new finish. I do not know whether the original finish is lacquer or shellac, testing with alcohol won't work because either would melt under such a test. My thinking is the poly would seal the under coat to prevent a recurrence of the white staining. Would those with a lot of wood finishing experience mind chiming in on this?

(This is just looking for a quick and easy solution for a friend for free)
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Old 02-27-2020, 12:43 PM   #2
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I brought in some Dalys ezfin to try out for exactly this application, its a wipe on waterborne phenolic urethane. can go right over catalyzed lacquers and pretty much any other finish. Found its best applied with a stain pad. Relatively expensive but stupid easy to apply.
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Old 02-27-2020, 04:32 PM   #3
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Originally Posted by cocomonkeynuts View Post
I brought in some Dalys ezfin to try out for exactly this application, its a wipe on waterborne phenolic urethane. can go right over catalyzed lacquers and pretty much any other finish. Found its best applied with a stain pad. Relatively expensive but stupid easy to apply.
Not available in Ontario Canada & they don't list ezfin on their own site.
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Old 02-27-2020, 04:53 PM   #4
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Originally Posted by jennifertemple View Post
Not available in Ontario Canada & they don't list ezfin on their own site.
Yeah i talked with the rep about that,Dalys doesn't seem really on top of their website management if you know what I mean.

You can find a data sheet here https://www.dalyswoodfinishes.com/PD...g%20System.pdf

We have used it as 2 coats over worn lacquer. This stuff has really good adhesion to pretty much everything. Oil based poly over lacquer I would do a small section and test for adhesion.

Last edited by cocomonkeynuts; 02-27-2020 at 05:06 PM..
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Old 03-07-2020, 07:47 PM   #5
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We have used it as 2 coats over worn lacquer. This stuff has really good adhesion to pretty much everything. Oil based poly over lacquer I would do a small section and test for adhesion.
The real question is where it can be purchased in Ontario, Canada.
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