How to Fix Epoxy Mistakes

Nick Shushan
By Nick Shusan , Epoxy Expert and the CEO of NYC Epoxy Flooring.

June 14, 2022

Epoxy mistakes can happen at any time. Even if you are professional, some events go outside your control.. These problems arise due to different factors – design flaws, incorrect mixing ratios, storage, or the uneven hardening of the epoxy. 

However, some ways exist to allow you to fix your epoxy. But remember that it is easier to fix the mistakes in your epoxy when it is wet than when it is fully cured. The good news is when you apply a second coat to your epoxy, you can still fix the mistakes. Nonetheless, this article enlightens you on different ways by which you can fix your epoxy. 

Common Epoxy Mistakes

  1. Incorrect Epoxy Mixing

Many epoxies are sold in two-component kits and need mixing before it is utilized. The most essential detail about epoxies is to adhere strictly to the mixing ratio. While some instructions on the components suggest you mix by volume, others mix by weight. Irrespective of your preferences, you must adhere to the mixing ratio strictly. Failure to do so results in an epoxy that hardens quickly or slowly. The worst situation occurs when it fails to harden at all.

  1. Selecting the Wrong Products 

Epoxy products are versatile. While some are used as bonding agents, others serve as structural fillers, casting compounds, or electronics. When you use the wrong product for a project, it can result in a problem that won’t get your desired result. 

  1. Wrong Temperature

Temperature plays a huge role when working with epoxy. If you use the wrong temperature for your epoxy, it can cure too soon and fail. If it is also stored at a high temperature (above 70°F), it can crystallize or solidify easily. 

Fixing an Uneven Epoxy Finish

An uneven hardening of an epoxy can lead to a tacky spot. If you want to fix an uneven epoxy finish, you will have to wait till it is completely dried before you lightly sand it with fine-grained wet sandpaper. Then, wipe off the surface with wet microfiber cloths to get rid of all sanding dust, debris, or oil. Afterward, apply a top coat of epoxy. Mix enough of the coat and ensure the project is entirely level to get the desired result. If you are not sure how to mix, mix a little more than your original calculation to have a smooth surface. 

How to Prevent an Uneven Epoxy Surface

Preventing an uneven epoxy surface is far better than trying to fix the mistake. Here, some points shall be highlighted to enlighten you on how to prevent an uneven epoxy surface. 

  • Incorrect Mixing Ratio – Ensure you get the correct mixing ratio. On most occasions, the ratio is stated by the manufacturers. Read the instructions and apply them to get the best result. 
  • Surface Preparation – Before you perform any epoxy-related task, ensure you prepare the surface. Wipe off any accumulated dust, dirt, debris, or oil to prevent epoxy problems
  • Old hardener or resin – The use of old hardener or resin leads to a sticky spot in the epoxy. Therefore, check before you use them.
  • Temperature – Temperature often results in a failed epoxy. For instance, too much heat can result in rippling or crystallizing of the epoxy.
  • Humidity – Humidity can affect your epoxy, most especially the glaze coat when there is too much humidity in the air. The best way to prevent this is by working in a well-ventilated and low humid area where you can use a torch to apply heat to the epoxy. 

Repairing Epoxy Resin Countertops

You can repair your countertops in two ways. 

  1. When It is Wet

The best time to repair your epoxy resin countertops is when it is wet. Here, you can smoother the product until it levels. Am, you can have it flow into corners to allow the epoxy layer to appear a little thin.

  1. When It is Cured

Repairing cured epoxy resin countertops is a common DIY task. Over time, you may have noticed that your countertops need some repair as the surfaces may have scratches or dents. In such a situation, you need to use a product that is specially made for resin countertops. 

After getting the product, use fine-grained wet or dry sandpaper and sand it along with the scratch of the surface. Ensure you treat any dented surface in this manner before you wipe the whole surface with a cloth, household cleaning agent, and water. Buff the surface with dry clothes and remove any remaining debris appearing on the surface. 

Finally, apply a thin coat of resin to restore the glossy appearance of the countertop. It is essential to wait at least a day before you get a glossy appearance. Now, you can use your epoxy resin countertops. 


It is easy to fix your epoxy mistake when you have any of these issues. Apply these processes to any epoxy mistakes and get the desired result.