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Resealing Granite Countertops: DIY Guide

Granite countertops are a popular choice for kitchens and bathrooms due to their durability and aesthetic appeal. However, over time, the sealant on granite countertops can wear off, leaving the surface vulnerable to stains and damage. To maintain the beauty and longevity of your granite countertops, it is important to reseal them regularly. While hiring a professional to reseal your countertops is an option, it can be costly. Fortunately, resealing granite countertops is a task that can be done as a DIY project. In this comprehensive guide, we will walk you through the process of resealing granite countertops, providing you with valuable insights and step-by-step instructions to ensure a successful outcome.

1. Understanding the Importance of Resealing Granite Countertops

Before diving into the process of resealing granite countertops, it is essential to understand why this maintenance task is crucial. Granite is a porous natural stone, which means it has tiny pores and capillaries that can absorb liquids and stains if left unsealed. The sealant acts as a protective barrier, preventing liquids from seeping into the stone and causing damage. Over time, the sealant on granite countertops can wear off due to regular use, cleaning products, and exposure to heat and moisture. When the sealant is compromised, the granite becomes susceptible to stains, etching, and other forms of damage. By resealing your granite countertops, you can restore their protective barrier and ensure their longevity.

2. Determining When to Reseal Granite Countertops

Resealing granite countertops is not a task that needs to be done frequently. The frequency of resealing depends on various factors, such as the type of granite, the quality of the initial sealant, and the level of usage. As a general rule of thumb, it is recommended to reseal granite countertops every 1 to 3 years. However, there are a few signs that indicate it is time to reseal your countertops:

  • Water no longer beads up on the surface but instead absorbs into the stone.
  • The countertop appears dull and lacks the luster it once had.
  • Stains are becoming more difficult to remove.
  • You notice etching or scratches on the surface.
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If you observe any of these signs, it is a clear indication that your granite countertops are in need of resealing.

3. Gathering the Necessary Tools and Materials

Before you begin the resealing process, it is important to gather all the necessary tools and materials. Having everything prepared in advance will make the task more efficient and ensure that you have everything you need. Here is a list of the tools and materials you will need:

  • Granite cleaner: Use a pH-neutral cleaner specifically designed for granite countertops to clean the surface before resealing.
  • Granite sealer: Choose a high-quality granite sealer that is suitable for your specific type of granite. There are different types of sealers available, such as penetrating sealers and topical sealers. Research and select the one that best suits your needs.
  • Lint-free cloth or sponge: Use a soft cloth or sponge to apply the sealer evenly on the countertop.
  • Painter’s tape: Use painter’s tape to protect the surrounding areas, such as the backsplash and cabinets, from accidental sealer application.
  • Protective gloves: Wear protective gloves to avoid direct contact with the sealer, as some sealers may contain chemicals that can irritate the skin.
  • Respirator mask: If you are using a sealer that emits strong fumes, it is advisable to wear a respirator mask to protect yourself from inhaling any harmful chemicals.

Once you have gathered all the necessary tools and materials, you are ready to proceed with the resealing process.

4. Preparing the Granite Countertop for Resealing

Before applying the sealer, it is crucial to prepare the granite countertop properly. This involves cleaning the surface thoroughly to remove any dirt, grease, or stains that may interfere with the sealer’s effectiveness. Follow these steps to prepare the granite countertop for resealing:

  1. Clear the countertop: Remove any items, such as appliances, utensils, or decorative objects, from the countertop to have a clear working space.
  2. Clean the surface: Spray the granite cleaner onto the countertop and use a soft cloth or sponge to wipe the surface in a circular motion. Pay attention to any areas with stains or spills, and make sure to remove them completely.
  3. Dry the countertop: After cleaning, allow the countertop to air dry completely. Ensure that there is no moisture left on the surface before proceeding to the next step.
  4. Protect the surrounding areas: Use painter’s tape to cover the edges of the countertop, backsplash, and cabinets to prevent accidental sealer application on these areas.
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By properly preparing the granite countertop, you create an ideal surface for the sealer to adhere to, ensuring maximum effectiveness.

5. Applying the Sealer to Granite Countertops

Now that the granite countertop is clean and prepared, it is time to apply the sealer. Follow these steps to ensure a successful application:

  1. Read the instructions: Carefully read the instructions provided by the manufacturer of the sealer you have chosen. Different sealers may have specific application instructions, so it is important to follow them accordingly.
  2. Pour the sealer: Pour a small amount of sealer onto the countertop. Start with a small section to ensure that you can apply the sealer evenly and without rushing.
  3. Spread the sealer: Use a lint-free cloth or sponge to spread the sealer evenly on the countertop. Work in small circular motions, ensuring that the sealer covers the entire surface. Pay extra attention to the edges and seams, as these areas are more prone to damage.
  4. Allow the sealer to penetrate: Let the sealer sit on the countertop for the recommended amount of time specified in the manufacturer’s instructions. This allows the sealer to penetrate the granite and create a protective barrier.
  5. Remove excess sealer: After the recommended time has passed, use a clean cloth to wipe off any excess sealer from the countertop. Make sure to remove all traces of sealer, as leaving it on the surface can result in a sticky residue.
  6. Let it dry: Allow the countertop to dry completely before using it. This may take a few hours or overnight, depending on the sealer and environmental conditions.
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By following these steps, you can effectively apply the sealer to your granite countertops, ensuring their protection and longevity.


Resealing granite countertops is an essential maintenance task that helps protect the surface from stains, etching, and other forms of damage. By understanding the importance of resealing and knowing when to perform this task, you can ensure the longevity and beauty of your granite countertops. Gathering the necessary tools and materials, properly preparing the countertop, and applying the sealer correctly are crucial steps in the resealing process. By following this comprehensive guide, you can confidently reseal your granite countertops as a DIY project, saving both time and money.

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