Is Granite Porous Or Nonporous

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Is granite porous or nonporous. Granite is a naturally porous stone though it s not as porous as some other types of natural stone like marble. Alas its porous surface is granite s kryptonite. Primarily the sealing is done to keep harmful bacteria from penetrating the stone and transferring to food items. Most fabricators will apply a sealer to granite countertops before they are installed which will protect them from absorbing liquids too quickly.

Polishing the stone creates a flat smooth surface that reduces the porosity. How porous your granite countertop is will depend on how it is finished and how it is treated. The general composition of granite includes silicon dioxide feldspar mica and various minerals. For example limestone is very porous when compared to quartzite and granite isn t as porous as marble.

Put a few drops of water on it and wait 30 minutes. Even worse germs bacteria and mold can invade unsealed granite counter tops with stains running not far behind. If the area is darker then the rest of your granite it means that it has adsorbed some of the water rendering it porous. If liquid or stains get down into the stone it can result in damages and weakening of your granite.

Also granite is immune from the damages of most common household acids. Granite is an igneous rock. If liquids are left on the surface for long periods of time they will eventually absorb. Answer 1 of 1.

When a surface is nonporous such as stainless steel it cannot absorb anything at all. Often overlooked are details such as the material surface texture. Polished granite is the most durable most granite countertops are polished then sealed making them nearly impermeable. Some of the more common porous surfaces include laminate granite and various types of tile and plastic materials.

Hard surfaces are a combination of porous and nonporous materials. Just last week i inspected a granite that had severe water damage so you never know here s a test you can perform. Granite countertops are porous if left unsealed. This means granite has tiny crevices or holes that allow air and water into the stone.

This means that if it is not properly sealed liquid is able to penetrate its surface. Common hard surface materials are stainless steel solid surface laminate porcelain and a wide variety of tile and ridged plastic materials. Being porous is not necessarily a bad quality. To better understand the natural porosity of granite it helps to understand the following details.

Granite while it is a very hard substrate it is still somewhat porous. All natural stone possesses some degree of porosity. Granite is usually non porous but there are exceptions.