Step 1: Apply a generous layer of paint stripper to a small section of the pavers using a pump sprayer. If you want, test the solution on an inconspicuous area to make sure that it is safe.
Step 2: Leave the stripper to sit for about three minutes so that it can begin to eat through the sealant. You should begin to notice the coating slowly returning to its liquid state.
Step 3: Take an old rag and use it to wipe away the dissolved sealant and the paint stripper. Make sure that you throw the rag away, as the stripper is full of toxic chemicals.
Step 4: Rinse your pavers with running water (the garden hose works great) to remove any remaining traces of the stripper and sealant. Leave the area to dry for about an hour.
Once you have finished working on the pavers closely inspect them for any remaining signs of sealant. If you can still see spots, you can repeat the above treatment until you are satisfied that the stone is completely clear. You will then be ready to apply another layer of sealant, being sure to follow the manufacturer’s instructions so that it dries completely clear.