When it comes to prepping an already existing coating with an epoxy or Polyaspartic coating there are many things to consider before you decide to go through with the project. If your existing epoxy or polyaspartic coating is showing signs of peeling over 15% of the coating from the concrete substrate, you would be better to remove the existing coating by diamond grinding to bare concrete. If your epoxy or polyaspartic floors show signs of delamination, this is the best option.
With a properly bonding coating, where less than 15% is delaminating, an epoxy or polyaspartic coating can be applied directly over the bonded coating. The most important factor for the new coating to bond properly is the creation of a profile suitable for coating adhesion and the removal of surface contaminants for the new epoxy or polyaspartic to properly adhere. This can be achieved by using an orbital buffer with a sand pad. These two options will get the job done. Once you’re done with that, you can sweep up the thick stuff and vacuum the floor, then use a denatured alcohol on a towel and wipe down the surface area. It is essential to have these tools and resources to effectively prep your already painted epoxy flooring.
The most important step is making sure you wipe down the floor with a high quality denatured alcohol. This will remove all dust particles and dirt, which will ensure the surface is clean and ready for the epoxy coating. This process takes fewer steps than an original epoxy coating. Most of the tough work for that isn’t necessary for re-coating an already painted epoxy flooring space.
Just like every other epoxy task, prepping the floor is extremely important. If it isn’t done correctly, the epoxy won’t adhere to maximize it’s potential. It will look and perform better under the right circumstances. We want to make sure we give you the tips, tools, and resources needed to perform this task effectively.
