How To Remove Sealer From Flagstone 

 July 20, 2022

By  Dale Keese

Applying sealer on flagstone is important for protection, though  a poorly done job means resealing will be necessary. However, the previous sealer should first be removed – so how does one remove sealer from flagstone?

Flagstone should be cleaned thoroughly using a damp cloth to get rid of dirt and debris. Once dry, pour a sealer stripper designed for use on flagstone, then use a stiff brush to agitate the surface without allowing it to dry, unless otherwise specified by the manufacturer. Wipe the surface clean.

Effectively removing sealer from flagstone is simple with the right technique and tools. Read on below to learn more.

Removing Sealer From Flagstone

Removing sealer from flagstone can be done at home without needing to spend on labor. Just be sure you follow the right method and have the proper tools.

What You’ll Need:

There are numerous sealer types on the market so it’s important to use the right formula for flagstone. Here’s a list of the equipment you’ll need, which are available on Amazon (note: we earn a small percentage if you decide to buy these products, which goes to maintenance of this site and helping readers like you):

-   Sealer stripper or remover that is made for flagstone surfaces. Choose a formula that is compatible with the previous sealer’s formula.

-   Stiff-bristled cleaning brush, which helps efficiently spread the stripper on the flagstone surface while agitating it for the best results. A brush with a long handle is recommended for comfort and convenience.

-   Chemical-resistant hand gloves are critical because they will protect your hands from exposure to the chemicals in most sealer removers

-   Cleaning cloths, which will be used to wipe down excess sealer remover. White is always recommended because colored towels may bleed onto the surface.


The process for removing sealer from flagstone is the same for most products; this is what has been outlined below. However, some sealer strippers may have specific directions which should always be followed.

  1. Pour a liberal amount of sealer stripper on the flagstone surface
  2. Use the brush to spread it evenly on the surface, without allowing it to dry. Continue agitating it for up to an hour until the sealer has visibly softened.
  3. Wipe the surface dry with a clean, white cloth.
  4. Repeat steps 1-3 if the sealer has not been completely removed.
  5. Rinse the flagstone surface thoroughly with clean water once done.

Allow the flagstone surface at least one hour to completely dry, or until the fumes have completely evaporate, until exposing it to traffic. Allow it to dry then cure for at least 24 hours until you reapply a sealer or finisher.


With these helpful tips, you can now easily remove sealer from flagstone. Always remember to double check the sealer manufacturer’s directions before getting started.

About the author

Hey, I'm Dale Keese.. thanks for reading.. hopefully this article can save you some time and trouble with your sealing job. I'm also in the process of making some video walk-throughs for youtube so check back soon! thanks

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