How do I remove limestone stain from my outdoor pavets

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q how do i remove limestone stain from my outdoor pavets
q how do i remove limestone stain from my outdoor pavets
  10 answers
  • Sharon Sharon on Nov 05, 2017
    Thats probably efflorescence, mineral salts from the mortar and/or the brick when exposed to water rise to the surface. Its hard to get rid of once it appears, but you can try scrubbing with muriatic acid or I would get the 20% vinegar from a gardening store, scrub with a long handled brush. Wear protective rubber boots, gloves, and goggles. https://www.youtube.com/watch?v=AEGLg8kT-Oo
    Then seal it.

  • Fiddledd224 Fiddledd224 on Nov 05, 2017
    Muriatic acid

  • 2dogal 2dogal on Nov 06, 2017
    From your pictures it looks like it is mineral deposits like calcium from water standing in the whiter areas. The walkway is not draining properly. Try a good shower cleaner first, then muriatic acid. Unless you are able to stop the standing water in those areas, it will build up again.
    If it is efflorescence, it will return as it is caused by the lime in the mortar leaching into the bricks. I have that on my fireplace!

  • Chrystina Chrystina on Nov 06, 2017
    What about CLR?

  • Kaye Kaye on Nov 06, 2017
    You might want to try Borax (20 Mule Team) and cider. - I tried cleaners on my basement with no result. This is the plan for the next attempt

  • Sheila Sheila on Nov 06, 2017
    try borax mix using package directions or there is a product on the market called SPRAY AND FORGET also apply by directions it has a fast method or just spray and forget.

  • Gina Gina on Nov 06, 2017
    We have very hard water with calcium & limestone. Using citric acid to clean the white deposits is the best cleaner I have found. It is not toxic & will clean without much effort. I first found it in the home canning section because it's used to preserve color in fresh fruit. Hope it works for you.

  • Steven Steven on Nov 06, 2017
    Add backing soda to hard water and it will turn soft and more effective in cleaning.

    • Russbow Russbow on Nov 07, 2017
      Baking soda does not chemically soften water, but it makes the water slicker and feel softer to the skin. Baking soda is also known as sodium bicarbonate. Washing soda, sodium carbonate, chemically softens water.

  • Jwien Jwien on Nov 06, 2017
    phosphoric acid (environmentally friendly) cleaners are available at paint stores (S-W).

  • Chrystina Chrystina on Nov 07, 2017
    It's a calcium lime and rust remover.