Removing sealer from your concrete
March 19th, 2018

Removing sealers can be difficult and time consuming. However, a few of our tips can help ease the process and save you some headaches.

Depending on the type of sealer, removal may or may not be an option. Sub-surface sealers such as Lifetime deeply penetrate the pores in the concrete, permanently changing the concrete, and therefore cannot be removed once it has been applied.

Surface-level sealers, on the other hand, can be removed in a few different ways.

If your concrete has been sealed with some kind of acrylic-based sealer, such as our ColorGuard or UltraSeal, removing it with it’s solvent is possible, though this process can be messy and labor intensive. Because it can be difficult, this method is best used for smaller touch-ups and spot removals. Usually these areas will be small and localized problems with cloudiness or other discolorations. We don’t recommend this method if your problem areas are larger than a few square feet.

  1. Apply xylene to problem areas
  2. Let sit for 2-3 minutes
  3. Scrub vigorously until all sealer has been removed.
  4. Rinse areas and allow 24 hours for drying

Once the concrete is fully dry, you can reapply the same sealer. For more info on the application process, check out or post here.

For larger jobs, sandblasting the surface is the preferred method, as it is faster and more effective than other chemical methods. Sandblasters can be dangerous for inexperienced users, and in those cases we can refer an experienced contractor to assist you. Otherwise, most hardware retailers have sandblasters available for purchase or rental.

Removing sealer from concrete can be tricky, especially when trying to maintain the look for the concrete. Sandblasting can etch the surface of concrete, creating visible marks that can detract from its beauty. To avoid this, try to keep the nozzle of the blaster at least shoulder height, and avoid scrubbing an area for an overlong period. Remember: you can always go back over an area again if the first attempt didn’t remove all of the sealer.

There are other chemical agents that can remove sealers from concrete, though these usually suffer from the same issues as the solvent method, and these chemicals are often hazardous to work with. We recommend that if you’re having trouble that you contact us directly with the specific issues you’re having so we can help you troubleshoot the process. Thanks for reading!