Removing Stains

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Identifying & Removing Stains

Oil-Based Stains (grease, tar, cooking oil, cosmetics) —Will darken the stone and normally must be chemically dissolved so the stain’s source can be rinsed away. Clean gently with a soft liquid cleanser, household detergent ,acetone.

 

 

 

 

  Organic Stains (coffee, tea, fruit, tobacco, paper, food, urine, leaves, bark, bird droppings)—   May cause a pinkish-brown stain and may disappear after the source of the stain has been     removed. Outdoors, with the sources removed, normal sun and in action will generally bleach   out the stains. Indoors use  a few drops and dry clean cloth .

 

 

 

 

  Ink Stains (magic marker, pen, ink) — Clean light- colored stones with bleach or hydrogen     peroxide. Use lacquer thinner or acetone for dark- colored stones.

 

 

 

 

 

  Paint Stains — Small amounts can scraped off carefully with a razor blade. Heavy paint     coverage should be removed with a commercial liquid paint stripper. DO NOT USE ACIDS   OR FLAME TOOLS TO STRIP PAINT FROM STONE.

 

 

 

 

  Water Spots and Rings

  (surface accumulation of hard water)—Buff with dry 0000 steel wool.

 

 

 

 

  Fire & smoke damage :

  older stones and smoke- or fire-stained fire- places may require
a thorough cleaning to   restore  their original appearance. Commercially available smoke removal products may save   time and effort.

 

 

 

  Etch Marks (calcareous stones)—Caused by acids (typically from milk, fruit juices, alcohol,     etc.) left on the surface of the stone, some will etch the finish but not leave a stain; others will    both etch and stain. Once the stain has been removed, wet

  the surface with clear water and sprinkle with marble polishing powder. Rub the powder into     the stone with a damp cloth 

 

 

 

  Efflorescence

  A white powder that may appear on the surface of the stone, it is caused by water carrying     mineral salts from below the surface of the stone
to the surface and evaporating. When the     water evaporates, it leaves the powdery salt residue. If the installation is new, dust mop or   vacuum the powder. Repeat as necessary as the stone dries out. Do not use water to remove   the powder (adding water will only add to the problem).

  If the problem persists, contact the stone contractor to identify and remove the cause of the     moisture.  Stains 

 

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