How can I clean my epoxy cabinet tops that turned yellow?

I did my cabinet tops in expoxy about 2 months ago, now they are turn? They have turned yellow in some areas, what can I do?

  2 answers
  • Kelli L. Milligan Kelli L. Milligan on Nov 18, 2018

    Is the yellowing under something? Sometimes that happens because of lack of exposure to light. Also the opposite can happen if a spot has direct light on it. It's weird, had both happen. That's why I don't recommend it. Nothing to do but strip off and do it again or live with it.

    • See 1 previous
    • Kelli L. Milligan Kelli L. Milligan on Nov 18, 2018

      I am so sorry, I really hope there is another answer for you. It is so distressing when you spend a lot of time and effort on a project just to have it not turn out the way you want it.

  • Molly Anmar Molly Anmar on Nov 18, 2018

    You have likely applied a polyester resin that used peroxide as a hardener. This stuff is reactive to UV sources and does change color to a transparent yellow then eventually to brown especially if exposed to heat.


    Note that polyester resin is a type of epoxy resin… it is just the cheapest version. The best and most expensive non-yellowing epoxy will be a urethane (NOT polyurethane) that often cures by exposure to the humidity in the air.


    You can coat the epoxy resin with a polyurethane that has “UV protection” as one way to prevent yellowing after the resin has completely cured (that UV-protection characteristic should be indicated on the label).


    Also check this out:

    https://www.aeromarineproducts.com/polyester-resin-vs-epoxy-resin/