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Aug 27, 2021/Stone Care Guides

The Proper Way to Seal Granite

seal granite

Why should I seal your granite countertop? This is a frequently asked question that homeowners ask when thinking about buying one of these beautiful countertops.

You can choose not to seal them, but unless you have a top made from Ubatuba granite, which is extremely dense, your attractive-looking surface will soon get stained. The counter may also be damaged by acidic liquids seeping into the stone and damaging it.

Your countertop may also absorb grease and chemicals that may discolor the stone. Unsealed countertops can also harbor germs, making them very unhealthy. It is far better to seal the Granite.

Testing if You Need to Seal Granite

There are a few types of Granite that do not need sealing because they are so dense that nothing can enter them. Your countertop may also have been sealed recently and does not need attention.

How can you know?

The Water Seal Test

Pour water so that a pool is formed about three inches across. Do this at several random places on the countertop. Then let the water just sit on the counter for around fifteen minutes.

If you can see a darker area or a ring when the water is removed, then your Granite needs sealing. Don't worry about harming the Granite. Pure water will just evaporate in time.

Be sure you check areas near sinks and where water is likely to accumulate.

Two Methods of Sealing your Granite Countertop

There are two methods to seal granite countertop. The first is where a microscopic material is applied that sinks into and fills all the porous entry points into the Granite. Apply this material when the Granite is dry.

The second method is to use a material that forms an impenetrable barrier along the countertop's surface. This lays over the microscopic entry points into the Granite and stops liquids from entering it.

Sealing Method 

It is essential to use a sealer that is designed for the job. A good product is the Stain Proof Sealer from MB Stone Pro.  Some of the benefits of using this sealer include it provides premium water and oil repellence for superior stain protection.  It also retains its natural surface color and finish, making it easier to clean.

When applying to your countertop, always test the sealer on a small area first.  You will want to allow a 24-hour cure time to determine the ease of the application and the desired results.  Read all the benefits and the application procedure here for complete and thorough instructions on its use.

How Often Should You Seal Granite?

You should reseal your granite countertop every 6 to 12 months, either completely or just in areas that require work. It is not possible to seal your Granite too often, so if you want to seal it more often, that is ok.

Can a Sealed Granite Countertop Get Stained?

Even if you completely seal your work surface, it is still possible for it to get stained. This would happen if you allowed the stain to sit on the work surface for a long while. Always remove any liquids that may be a problem before they stain.

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