Clear polyurethane topcoat help

[bbitz]

Not TECHNICALLY flooring but this forum is the closest I think I'll get...

This weekend I poured a clear epoxy resin topcoat on top of my desk to protect it. I figure this is at least somewhat similar to epoxy flooring.

Unfortunately I failed to consider UV protection before I applied the epoxy. Now I want to put a clear polyurethane topcoat on top of the resin to prevent yellowing, but I've missed the window to have a chemical bond between the epoxy and the polyurethane because the epoxy on the desk is already cured.

Can I apply polyurethane directly on top of my cured epoxy resin? Do I have to sand the epoxy first to get a good bond? After sanding, will the polyurethane topcoat restore the clear and glossy look to my now sanded epoxy? What about the type of polyurethane, should I use a two part or one part system? Wipe on, brush on or spray on? Many questions...

Sorry if this isn't the right place for this post. Thank you all for any help.

 

[benwah]

Unfortunately clear poly on clear epoxy wont help you a ton, but it will help some for sure.

Sand with a sanding sponge just enough to take the gloss off. Vacuum or wipe clean, then do a solvent wipe with a rage and acetone.

You can use either a brush or mini roller to apply the poly. As long as you put it on thick enough it will level out a bit.

Yes it will remove the scratches from sanding.

I prefer 2 component poly myself

 

[papp101]

Sand with a sanding sponge just enough to take the gloss off. Vacuum or wipe clean, then do a solvent wipe with a rage and acetone.

I agree with benwah, scuff/wipe apply topcoat is the way I would go.

Please share a video of you applying "rage and acetone." This should be good!!!!

J/k

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[LegacyIndustrial]

https://www.legacyindustrial.net/pdf/RecoatingResin_AcrylicSystems.pdf


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