What is Marble Sealer and What is its Purpose?

When applied correctly, a marble sealer is extremely effective in sealing marble from foreign substances that can stain the marble. If applied blindly, its effects can be counterproductive. Every stone is different and hence needs to be considered carefully before getting the marble sealer applied. A marble sealer is beneficial if you understand marble sealing first.

Marble Sealing

marble sealer is a surface treatment that is applied to the marble which clogs it, resulting in blocking of the pores over the marble surface. This prevents any foreign substance to penetrate the marble surface and getting the stone stained. The sealers are impregnator sealers, made up of a liquid-based solvent and a solid resin. The solvent acts as the carrier and penetrates the pores on the stone surface, with the evaporation leaving behind a resin that plugs the pores.

These impregnator sealers are located below the surface sealers. Once applied and absorbed by the stone, they do a great job in the prevention of stains. The sealer will not cause any harm to the marble. The sealer will not polish the stone in any way; neither will it protect the shine of the marble surface. Marble sealer will not protect the stone from tear and wear or protect it from acidic substances. That is why you need to understand what the marble sealer does best and use it appropriately.

Marble sealer

Unlike popular belief, the marble is not a porous stone. With the passage of time, liquids can penetrate through the pores of the stone. Once the liquid penetrates it, stains start forming once the liquid evaporates.


Take for example the spillage of coffee on the marble countertop. With the passage of time, the coffee will start penetrating the marble surface. The liquid is already inside the stone, leaving a stain in the process. The carrier part of the marble sealer is designed to impregnate the stone’s pores, leaving behind resins that block any more foreign liquid to enter.

Marble is used to adorning homes and within the compound. It is a product of nature, hence it should be altered from its original form as less as possible. The beauty of the stone is hence preserved.


Now that you know what a marble sealer is and how productive it is, try to use it in only circumstances that will help in marble sealing. Marbles are important for a wide variety of applications; therefore, the sealer’s benefits are paramount.