How to Get Rid of Limescale on Flagstone Around a Pool

Limescale consists primarily of mineral deposits that were formerly dissolved in water. In areas with hard water, limescale buildup around a pool can be a persistent problem. As droplets of water evaporate, they leave behind chalky mineral deposits. On dark-colored flagstones, limescale can be a spotty, scaly eyesore. Luckily the residue is fairly easy to remove with any number of weak household acids that are safe to use around pools.

Vinegar
Lemon juice
Pickling vinegar
Lime juice
Scrub brush
Cloth

Instructions

- 1
  Dip a scrub brush in a small bowl of vinegar.
- 2
  Scrub the visible limescale buildup on the flagstone vigorously until it's gone or until you make no more progress removing it.
- 3
  Wipe up the vinegar with a wet rag. If only a bit of the limescale remains, repeat steps 1 and 2. If a significant amount of limescale remains, move on to step 4.
- 4
  Saturate a cloth in pickling vinegar or lime juice and place it over the limescale deposit for an hour.
- 5
  Scrub away the limescale with a scrub brush dipped in the vinegar or lime juice.
- 6
  Wipe or rinse the area clean. Repeat if necessary.

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