How To Remove Concrete Sealer From Driveway. If it is a large area then pour onto the surface, and then spread using a broom or similar. There are a few ways to remove the concrete sealer.
Pour a small amount on the floor in an area that has been covered by stuff for a long time. Being very careful to avoid spills and splashes apply the chemical to the affected area. Concrete cleaners made from harsh chemicals may remove stains and marks effectively, but they can also discolor or damage concrete or stone surfaces.
Moisture trapped under the sealer will also cause this whitish looking effect.
The concrete can be then etched by acid and neutralized, or it can be mechanically scratched to remove the old sealer. How to remove a concrete sealer: Put on your protective gear and make sure you and your assistant have no exposed skin. If it is a large area then pour onto the surface, and then spread using a broom or similar.