The cleaning of granite and marble surfaces is generally very simple, you can easily do it by using a wet cloth, or using some kind of cleaning agent immediately after use. But forgetting to clean or use bleach that affects the color of the stone can completely happen, causing the surface of your stone to be discolored, yellowed…
What is granite and marble?
Granite
Granite, also known as Granite is a type of rock formed naturally from deep in the ground by the metamorphism of limestone, dolomite, and melting of many types of sand, rock, and gravel. .. form a solid block, hard, rough and especially very durable.
Granite has the characteristics of easy to shine, easy to clean, hygienic, and colorful, so it is very popular in the field of construction from civil houses to large projects such as flooring, gate paving, surface paving. kitchen, paving columns, paving stairs…
The most popular types of granite today can be mentioned as Black Kim Sa stone, Brazilian Red stone, Mother of pearl stone, Black Hue stone, Mongolian purple stone, Suoi Lau white stone, Phu Yen black stone, Binh Dinh red stone. 
Marble
Marble, also known as Marble is a type of stone formed from limestone with the main part being Calcite (crystallized form of Calcium Carbonate CaCO3). Marble doesn’t have the same hardness as granite, especially porous, soft and easy to absorb water, stick to dirt and discolor, so it requires waterproofing treatment and the use process requires Clean regularly to keep ice fresh.
Although there are many features that are difficult to use, but marble has many vivid patterns, does not absorb heat to help prevent heat and has many bright colors, so it is still chosen by many people.
Popular types of marble in our country can be mentioned as Carara White stone (Italy), Volakas stone (Greece, Italy), Royal White stone (China), Egyptian Gold stone.
Causes of yellowing on the stone surface
Granite, marble basically are very hard and durable. However, on the surface of these rocks, there may still be cracks that allow dirt or cleaning solutions to penetrate and affect the stone surface.
There are 3 basic causes that can affect the color of the stone, causing yellowing on the stone surface:
The first cause is due to the dirt of food such as coffee, tea, broth, and grease that is deposited on the surface of the stone and you forget to wipe it right away, making these dirt penetrate to the surface of the stone.
The second cause is most likely you are using an inappropriate stone surface cleaning solution. These solutions are highly corrosive, making the stone abrasive day after day when you use it and up to a certain point, creating conditions for dirt to stick to the stone surface causing yellowing.
The third reason may be that the items you leave on the stone surface for a long time will create stains when you lift them up and see them. This is oxidation of the contact surface.
Ways to remove yellow stains on the stone surface, overcome the dirt on the stone surface
Here, Qualitas DC would like to introduce two ways to clean granite and marble surfaces that you can apply to your family:
Using the method of polishing the stone surface
This is a method that can be considered as thorough to remove scratches as well as return a shiny surface to the stone. However, this method usually requires you to have specialized polishing machines as well as use some polishing chemicals to be able to do it. You can also polish by hand, but the process is laborious.
This method requires you to have experience when manipulating to avoid causing abrasion and scratching the stone surface. In case the dirt has penetrated below the stone surface, you need to use some cleaning solution to remove the stain when performing the polishing.
Use floor cleaning solutions, specialized stone surface cleaning
This is a popular method chosen by many people. Usually when the stain has just adhered to the stone surface, you can easily clean it with a wet cloth and clean water. However, due to being busy or forgetting to clean immediately, you should have some specialized cleaners for your stone surface. Lemon, vinegar or baking soda should not be used to clean these stone surfaces. Here are the types of marble and granite floor cleaning solutions you can use:
MARBLE RENOVATOR
Marble Renovator is a versatile cleaner for all floor materials. Especially suitable for marble and granite floors. Easily remove all stains on the floor. EFFECT granite, marble cleaner is suitable for cleaning granite and marble floors of households, offices, hotels, restaurants and foyers of public areas. Also used on metal, enamel, glass and wood surfaces.
