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Granite Countertops: How Often Should They Be Sealed?

Granite Countertops: How Often Should They Be Sealed?

Do you need to seal your granite countertops?

Try this test…drizzle some water on your granite countertop and see if the stone turns dark and absorbs the water within 5 minutes or so. If your granite countertop absorbed the water within that time frame you should definitely have it sealed. Keep this test in mind for future reference; your countertops should be tested every few months to keep track of how often you should seal your granite and stone surfaces. If the water doesn’t absorb into the granite and stays beaded on the surface you, then you countertop is still sealed and you are good to go for a while.

granite countertop

So why do you need to seal granite countertops in the first place?

Porous countertops can be problematic in the kitchen where oils, grease, water, and other liquids can spill onto the counters. This can cause stains that will be extremely difficult to remove. Not to mention that it will make it easier for bacteria to grow within the granite. Some types of granite mixed with calcite will actually corrode when exposed to acids like lemon juice, vinegar, coffee, alcohol and more.

By sealing your granite countertops, you’ll help to prevent all of these liquids from seeping into the granite, thereby preventing your beautiful granite countertops from staining or from aiding the growth of bacteria (not something you want in a space you most likely use for food prep).

Unfortunately, the sealant will wear off over time. This means that you will need to reapply a sealant to your granite countertops on a regular basis to help keep it in tip-top shape. This can be done at home but hiring a professional to help with this will ensure it’s done properly, with the appropriate penetrating sealer.

Wiping granite

Make it last

Groutsmith specializes in sealing and maintaining granite and stone countertops and encourage you to clean them properly to help increase the life of the sealer and protect the surface. Remember to clean spills as soon as you notice them to avoid having the liquids penetrate through the sealant and into the stone. To clean your freshly sealed granite, neutral cleansing products will be your best bet. Find a specially formulated stone cleaner or try a solution of water and mild dish soap. Just stay away from abrasive cleaners that use harsh chemicals.


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  • Rick Davis
    March 2, 2020, 9:18 am REPLY

    I liked your tip of testing your countertops every few months to see if they need to be sealed. My wife and I are preparing to get new granite countertops and we were wondering how we would keep them looking fresh if we got them installed in our kitchen. I’ll be sure to tell my wife that we should have granite countertops tested every few months to keep them looking new.


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