Do Granite Countertops Need Sealing? Busting Myths and Providing a Clear Answer.

Photo courtesy of “Kitchen Solvers of Sioux Falls” (kitchensolvers.com)

Introduction

When we think of granite, we often picture its beauty, elegance, and impressive durability. But what about maintenance? How can you ensure this stunning surface lasts for years to come? And most importantly, is sealing granite countertops truly necessary?

There are many myths and conflicting opinions on this subject, which can leave even the most experienced homeowners uncertain. Some argue that granite is naturally resilient and doesn’t need extra protection. But is that really the case, or is sealing essential to maintaining your countertop in pristine condition?

In this article, we’ll provide clear, straightforward answers to these questions, debunk common myths, and explain the key factors to consider when it comes to sealing granite. Wondering how often you should reseal your countertop or which sealers work best? Or maybe you're curious about alternative solutions that could be even more effective? We’ll cover everything in detail.

If you want your granite countertop to stay as beautiful and durable as the day it was installed, keep reading—we’ll offer not just expert insights, but also practical tips to help you make the right choice!

1. What does sealing granite countertops stand for?

Granite countertop sealing. Image sourced from Pinterest (@archcitygranite)

Do Granite Countertops Need Sealing?

Sealing granite means applying a protective layer to prevent moisture and stains from getting into the stone. Even though granite looks solid, it’s actually a porous material that can absorb liquids, leading to stains and possible damage over time. While granite is very durable, without proper protection, it can lose its beautiful appearance. Sealing helps keep it looking great and extends its lifespan by protecting it from water, dirt, and grease stains.

People started sealing granite countertops in the late 1990s and early 2000s when they became popular in home kitchens. Before that, granite was mostly used in construction, where sealing wasn’t a major concern. But once it was used for countertops, experts realized that, despite its strength, granite has tiny pores that can soak up liquids. This became a problem, especially in kitchens where spills from juice, vinegar, or alcohol are common.

Today, sealing is a standard part of granite countertop installation. But do you always need to seal it, or can you skip this step? Let’s find out!

2. Sealing Granite Every 10 Years: Fact or Marketing Hype?

You’ve likely heard the claim that granite countertops only need sealing once every 10 years. While this is a common belief, the reality is a bit more nuanced.

The frequency of sealing largely depends on how often your countertop is used. If your kitchen is a high-traffic space with frequent cooking, spills, and daily wear, sealing your granite more regularly is recommended. However, if your countertop experiences minimal use and is well-maintained, resealing every few years may be sufficient.

Another key factor is the type of granite and the quality of the sealer used. Some granites are naturally less porous, absorbing fewer liquids and requiring less frequent maintenance. Choosing the right sealing routine ensures your countertop remains protected, beautiful, and durable for years to come.

3. How Often Should Granite Countertops Be Sealed?

This is one of the most common questions, but the answer isn’t straightforward. The frequency of resealing a granite countertop depends on several factors, including how often it’s used, the type of granite, and the quality of the initial sealant.

Granite, despite its durability, is a porous material. Over time, even a high-quality sealant can wear off, especially in kitchens with heavy use. If your countertop is exposed to frequent cooking, liquid spills, and acidic substances like citrus or vinegar, it may need resealing every 1–2 years to maintain its protective barrier.

For countertops that see less activity, such as a bar top or a rarely used surface, resealing might only be necessary every 3–5 years. Additionally, some varieties of granite are naturally less porous, meaning they absorb fewer liquids and require sealing less frequently.

A simple way to check if your countertop needs resealing is the water drop test. Place a few drops of water on the surface and observe. If the water is quickly absorbed, the sealant is no longer effective, and it’s time for resealing. If the water beads up and stays on the surface, the sealant is still intact, and no immediate action is needed.

This easy test can help you determine your countertop’s condition without unnecessary costs. However, even if the sealant still seems effective, periodic resealing helps preserve the stone’s longevity and beauty.

Ultimately, there’s no universal rule for how often to reseal granite. Instead, it’s best to monitor your countertop’s condition and adjust the sealing schedule based on usage and stone type. Regular maintenance will ensure your granite countertop remains as stunning and durable as the day it was installed.

4. Which sealers are the most durable and easiest to apply?

When choosing a granite sealer, it's crucial to consider factors such as longevity, ease of application, compatibility with your specific granite type, and the level of exposure to moisture and stains. With so many options available, selecting the right sealer can be overwhelming. To simplify the process, we’ve compiled an overview of the main types of granite sealers, along with a comparison to help you find the best solution for your home.

Types of Granite Sealers

1. Penetrating Sealers
   These sealers absorb deep into the pores of the granite, creating a long-lasting internal barrier against moisture and stains. Because they bond with the stone’s structure, they provide superior protection without altering the natural look of the granite.

2. Topical (Water-Repellent) Sealers

These sealers form a protective coating on the surface, preventing liquids from penetrating the stone. They work well for countertops that need basic protection from spills and stains but may require more frequent reapplication compared to penetrating sealers.

Comparison Table of Sealers

* Price as of March 10, 2025 – Published for reference and may differ at the time of reading.

How to Choose the Best Sealer for Your Granite?

Selecting the right sealer depends on various factors, such as the type of granite, usage conditions, and your maintenance preferences. Here are some recommendations to help you make the best choice:

• For high-traffic countertops (frequent cooking, liquid spills, etc.), opt for a penetrating sealer like StoneTech BulletProof or Granite Gold Sealer. These offer maximum protection and extend the lifespan of your countertop.
• For countertops with lighter use that are not frequently exposed to water or stains, water-repellent sealers like TriNova Granite Sealer or EcoSafe Granite Sealer are a great choice. They are easy to apply and effectively protect against everyday dirt and moisture.
• For enhancing the natural beauty of granite, choose a wax- or oil-based sealer. These products add a glossy finish and enrich the color of the stone. However, they require more frequent reapplication to maintain their effect.
• For long-term protection with minimal maintenance, penetrating sealers are the best option. They absorb into the stone, providing deep and long-lasting protection, but may require more preparation and time for application.

Now that you understand the different types of sealers and how to choose the right one for your granite, you can confidently move forward with sealing your countertops. Whether it's a kitchen workspace or a bar counter, the right sealer and timely maintenance will keep your granite in excellent condition for years to come.

5. A Simple Step-by-Step Guide to Sealing Granite Countertops

Sealing granite countertops is a straightforward task that you can easily do yourself with the right materials. We’ve put together a detailed step-by-step guide to help you get it done correctly and without hassle. In short, the process involves four simple steps: Choose the right sealer ->Prepare the surface -> Apply the sealer -> Wait 24 hours  ->Perform a water drop test.

Here is a more detailed step-by-step guide:

1. Select the sealer:

A Simple Step-by-Step Guide to Sealing Granite Countertops.Photo sourced from Pinterest. 

Now that the countertop is clean and dry, it's time to choose a sealer: penetrating or water-repellent. Which sealer should you choose? It depends on which properties are more important to you. A penetrating sealer will provide deeper protection, but it will take more time to apply. A water-repellent sealer will be quicker to apply but may need to be reapplied after some time. Here are a few popular and trusted options:

• TriNova Granite Sealer
  This is one of the most popular sealers, offering excellent protection against liquids and stains. It is easy to apply and suitable for most types of granite. TriNova provides long-lasting protection and helps maintain the stone's shine.

The reviews are sourced from the Amazon.com 

• Granite Gold Sealer
  This sealer is perfect for daily maintenance of granite countertops. It provides excellent water-repellent protection and leaves no residue. Suitable for use in any space

The reviews are sourced from the Amazon.com 

• StoneTech BulletProof Sealer
  For more advanced protection, especially for countertops with high usage, StoneTech BulletProof is an excellent choice. It penetrates deep into the stone’s pores and creates a strong protective barrier. While it is a more expensive option, it provides superior defense against stains and contaminants.

The reviews are sourced from the Amazon.com 

2. Prepare the Surface

A Step-by-Step Guide to Sealing Granite Countertops. Photo sourced from Pinterest (@ehow)

Before applying the sealer, it’s essential to properly prepare the countertop surface. You will need:

• A soft cloth or sponge (avoid abrasive materials to prevent scratching the granite).
• A pH-neutral cleaner without harsh chemicals (such as mild dish soap or Granite Gold Daily Cleaner).

Thorough cleaning is crucial because any remaining dirt, oil, or food residue can prevent the sealer from properly bonding with the stone. Wipe the countertop from the edges toward the center, paying special attention to corners and seams where debris may accumulate. After cleaning, rinse the surface thoroughly with clean water and dry it using a soft towel.

The countertop must be completely dry before applying the sealer, as moisture on the surface can interfere with the sealer’s ability to penetrate the granite’s pores effectively.

3. Apply the sealer.

A Step-by-Step Guide to Sealing Granite Countertops. Photo sourced from Pinterest (@ehow)

Now that you've chosen your sealer, it's time for the most important step—application. Here's how to do it:

• Apply the sealer evenly – Using a soft cloth or brush, spread the sealer evenly over the clean, dry countertop surface. Work in small sections to prevent the sealer from drying before you can properly distribute it.
  
  
• Allow time for absorption – Let the sealer sit for 5-10 minutes so it can penetrate the granite’s pores and create a protective barrier.
  
  
• Wipe off excess sealer – Once the sealer has had time to absorb, use a clean cloth to wipe away any excess. Avoid leaving puddles, as they can dry unevenly and cause visible marks on the surface. 

4. Let it dry.

A Step-by-Step Guide to Sealing Granite Countertops. Photo sourced from Pinterest (@ehow)

Now that the sealer has been applied, it needs time to dry. Typically, sealers dry within a few hours, but it's best to leave the countertop untouched for 24 hours to ensure full absorption and maximum effectiveness.

Avoid placing objects on the countertop or using it during this period. This drying time is crucial for allowing the sealer to penetrate the pores fully and provide long-lasting protection.

5. Check the result.

Once the drying time has passed, don't forget to check how well the sealing worked. Use a simple water test:

• Drop a few water droplets onto the countertop. If the water beads up on the surface without absorbing, the sealing was successful.
• If the water soaks in, the sealer may not have worked properly, and you might need to repeat the process or try a different type of sealer.

Congratulations! If your test was successful, your granite countertop is now well-protected and ready to serve you for years to come.

A Few Helpful Tips

• Work in a well-ventilated area. Some sealers emit strong odors that are best avoided. Ensure proper airflow by opening windows or using ventilation.
• Use only high-quality sealers. Cheap sealers may not provide the desired level of protection or could even damage the stone surface.
• Regularly check the condition of the seal. Even after sealing, periodically test your countertop. If water starts absorbing quickly or stains appear more easily, it's time to reapply the sealer.

6. Can You Protect Granite Without Sealing?

Many granite countertop owners wonder if sealing is truly necessary or if there are alternative ways to protect the stone. While sealing is widely regarded as the most effective method for safeguarding granite from stains and moisture, some may be interested in exploring other options. Let’s take a closer look at the possible alternatives to sealants, along with their advantages and drawbacks.

How to Choose an Alternative to Sealers?

If you prefer natural or less chemical-based solutions, oils and waxes can be a good alternative to sealers. However, it's important to remember that these options require regular reapplication and do not provide the same long-term protection as traditional sealers.

When Should You Use Oils or Waxes?

If your countertop is not used frequently, such as a vanity top in the bathroom or a bar counter, oils and waxes can serve as a suitable alternative. They are also a great option for homeowners who want to enhance the natural beauty of the stone while prioritizing eco-friendly products

When Is a Sealer the Better Choice?

If your granite countertop sees heavy daily use and you need reliable protection, a sealer is the better option. It penetrates deep into the stone, offering long-lasting defense against stains, moisture, and dirt.

7. What Happens If You Don’t Seal a Granite Countertop at All?

Photo of a heat mark on a granite countertop caused by hot cookware that was not sealed. Image sourced from fb.com.

If a granite countertop is not sealed, it becomes more susceptible to various issues that can impact its appearance and durability. Granite is a porous stone, and without a sealer, it begins to absorb liquids. Water, oil, juices, wine, and even coffee can seep into the stone’s pores, leaving stubborn stains that are difficult to remove. This is particularly true for brightly colored liquids like wine or sauce, which can immediately leave visible marks on the surface.

In addition, moisture that penetrates the stone can cause cracks to expand and weaken the granite’s structure. In high-humidity environments, this can even lead to the growth of mold and mildew in the porous areas of the stone. These undesirable effects not only compromise the countertop’s appearance but may also present potential health hazards.

Without a sealer, granite loses its natural shine and rich color, gradually becoming dull and dirty, even with regular cleaning. Stains become more prominent, and removing them becomes increasingly difficult. Ultimately, the countertop may require costly restoration or even replacement of damaged sections.

Sealing is a simple yet essential step that prevents these issues, helps preserve the granite in excellent condition, and significantly extends the countertop’s lifespan.

Frequently asked questions about sealing countertops. 

Is it necessary to seal granite just after the installation?

Yes, it is recommended to seal a granite countertop right after installation. Although granite is a durable and beautiful material, it is still porous, and moisture or dirt can penetrate its pores, leaving stains. Sealing creates a protective layer that prevents liquids and contaminants from entering, which is important from the very beginning to prevent potential problems in the future.

Can you seal the countertop yourself, or is it better to hire a professional?

Sealing a granite countertop is quite doable on your own. It’s a process that can be done with a good quality sealer and basic tools. However, if you're not confident in your abilities or want to achieve a professional result, it’s an option to hire a specialist. You can find a more detailed answer to this question in our article, "Granite Countertop Care: Common Mistakes, Expert Tips, and Top Cleaning Products."

How to check if the sealer has been applied to the countertop?

To check if a sealer has been applied to the granite countertop, you can perform a simple water test. Drop a few water droplets onto the surface. If the water quickly absorbs, it means there’s no sealer or its effect has worn off. If the droplets stay on the surface without being absorbed, it means the sealer is still protecting the granite.

These are some of the most common questions among granite countertop owners, and knowing the right answers will help you keep your surface in perfect condition.

Conclusion

Sealing granite countertops is an important step to protect against dirt, stains, and damage. Despite its durability, granite remains a porous material, and without proper protection, liquids can penetrate its pores, leaving stains and causing damage.

With this knowledge and the step-by-step instructions in our article, we’re confident you can handle sealing your countertop yourself. However, if you have any remaining questions, feel free to ask us or contact the trusted contractors we’ve gathered in one place in Top 500 Custom Countertop Fabrication & Installation Companies in the USA for 2024-2025!