Is Granite Porous Or Nonporous

Hard surfaces are a combination of porous and nonporous materials.

Is granite porous or nonporous.

How porous your granite countertop is will depend on how it is finished and how it is treated. Alas its porous surface is granite s kryptonite. Just last week i inspected a granite that had severe water damage so you never know here s a test you can perform. The general composition of granite includes silicon dioxide feldspar mica and various minerals.

Some of the more common porous surfaces include laminate granite and various types of tile and plastic materials. Granite is a naturally porous stone though it s not as porous as some other types of natural stone like marble. Most fabricators will apply a sealer to granite countertops before they are installed which will protect them from absorbing liquids too quickly. To better understand the natural porosity of granite it helps to understand the following details.

If liquids are left on the surface for long periods of time they will eventually absorb. For example limestone is very porous when compared to quartzite and granite isn t as porous as marble. Granite countertops are porous if left unsealed. If liquid or stains get down into the stone it can result in damages and weakening of your granite.

Answer 1 of 1. Polished granite is the most durable most granite countertops are polished then sealed making them nearly impermeable. Granite is a porous natural stone. Granite while it is a very hard substrate it is still somewhat porous.

Granite is an igneous rock. Common hard surface materials are stainless steel solid surface laminate porcelain and a wide variety of tile and ridged plastic materials. Come back and wipe the area. Put a few drops of water on it and wait 30 minutes.

Also granite is immune from the damages of most common household acids. Often overlooked are details such as the material surface texture. Granite is a porous material. This means granite has tiny crevices or holes that allow air and water into the stone.

Granite is usually non porous but there are exceptions. Being porous is not necessarily a bad quality. When a surface is nonporous such as stainless steel it cannot absorb anything at all. Polishing the stone creates a flat smooth surface that reduces the porosity.

This means that if it is not properly sealed liquid is able to penetrate its surface. Primarily the sealing is done to keep harmful bacteria from penetrating the stone and transferring to food items. All natural stone possesses some degree of porosity.