Remove lime stains on granite with the right acid

The natural stone granite, despite its resistance and insensitivity, tends to form lime stains. The porous surface retains limescale, especially after hard tap water has dried. Ideally, cleaning methods that are as dry as possible are used when removing. Acidic agents attack the stone.

Check the content of cleaning agents

Granite is a hard stone and has an advantage over soft stones. This can create water spots on marble that are not possible on granite. Nevertheless, limescale marks or a film of limescale form on the surface of the granite, especially when water hits it frequently, such as on the sink, on the kitchen worktop and in the shower.

  • Also read - Removing lime stains on glass
  • Also read - removing limescale from the sink
  • Also Read - Removing Water Stains From Leather

The manufacturers of cleaning and care products offer a wide range of products for natural stone surfaces. However, they do not always consider which acidic additives are disadvantageous for granite. Each agent should be checked for the ingredients before use. Unsuitable for granite are:

  • Hydrochloric acid (€ 6.95 at Amazon *)
  • phosphoric acid
  • sulfuric acid
  • citric acid
  • acetic acid
  • Fluoric acid

These types of acids lead to discoloration and bleaching of the surfaces. Agents containing hydrochloric acid create an additional problem. They dissolve the metallic ore components in the granite and after the lime stains have been worked on, rust stains on the stone slabs must be removed.

Important machining properties

The ideal acid for removing lime stains from granite is aminosulfonic acid. It is added to high-quality branded care products as a descaling agent. In addition to the gentle care product, the type of application is important. In general, the following procedures should be followed to remove limescale stains:

  • Apply aminosulfonic acid or agent very diluted
  • Work with a damp cloth or sponge
  • Dust off the granite surface before application to prevent abrasive effects
  • Do not use microfiber cloths or other scratchy application aids
  • Quick and thorough dry wiping after processing
  • Do not use bleach
  • Do not use the highly recommended home remedies such as toothpaste, baking soda and cola on granite
Tips & Tricks The best way to prevent the formation of limescale stains is to prevent water from drying off on the surfaces. Always keep drying aids ready to hand for immediate use in wet areas. Soft, absorbent cotton cloths are suitable for worktops, while squeegees with rubber lips are useful in bathrooms and showers.