Sealing New Concrete

Are you planning to install new concrete in your home or business? If so, it’s essential to understand the importance of sealing your new concrete.

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Sealing your concrete not only enhances its appearance but also protects it from damage caused by weather, chemicals, and oil spills.

There are different types of sealers available for new concrete, and knowing which one to choose can be overwhelming.

Additionally, knowing when to seal your new concrete, how to prepare the surface, and how to apply the sealer can be challenging for beginners.

In this article, we will guide you through the process of sealing new concrete, so you can ensure your investment is protected and looks great for years to come.

Understanding the Importance of Sealing Concrete

You might not realize it, but protecting your fresh cement is crucial to ensuring it lasts for years to come. Sealing concrete is a necessary step in the installation process because it helps protect the surface from damage caused by weather conditions, spills, and other types of wear and tear.

When left unsealed, concrete can easily absorb moisture, which can lead to cracks and other types of damage over time. This means that if you want your concrete to last as long as possible, you must seal it as soon as it’s installed.

One of the main benefits of sealing new concrete is that it helps prevent water damage. When water gets into concrete, it can cause the surface to become weak and brittle, leading to cracking and other types of damage. Sealing the surface of your concrete helps to keep moisture out so that it stays strong and durable over time.

Additionally, sealing concrete can help prevent stains from oil, grease, and other types of spills, which can be a major problem on unprotected surfaces.

Finally, sealing concrete can also help to improve its appearance. When left unsealed, concrete can look dull and unattractive. However, with the right sealant, you can give your concrete a beautiful, glossy finish that will enhance its overall appearance.

So if you want to get the most out of your concrete, be sure to seal it as soon as possible, and you’ll be able to enjoy a durable, attractive surface for years to come.

Types of Sealers for New Concrete

When it comes to protecting your freshly poured cement, it’s important to understand the various types of sealers available.

There are two main types of sealers for new concrete: film-forming and penetrating sealers. Film-forming sealers leave a protective layer on the surface of the concrete, while penetrating sealers soak into the pores of the concrete to create a protective barrier from within.

Film-forming sealers can be further categorized into two types: acrylic and polyurethane. Acrylic sealers are the most commonly used type of film-forming sealer for new concrete. They are easy to apply and offer good protection against water and UV rays. Polyurethane sealers are more expensive than acrylic sealers but offer better protection against abrasion and chemicals.

Penetrating sealers, on the other hand, are made up of silanes and siloxanes. These sealers penetrate the surface of the concrete to create a chemical barrier against water, oil, and other contaminants. They are ideal for protecting concrete from damage caused by freeze-thaw cycles, as they allow the concrete to breathe and release moisture. Penetrating sealers do not change the appearance of the concrete and are often used for decorative concrete applications.

When to Seal New Concrete

It’s crucial to protect your freshly poured cement by applying a sealer at the appropriate time. While it may be tempting to seal it immediately, it’s important to wait until the concrete has fully cured. This typically takes around 28 days, but it’s best to consult with your contractor or the sealer manufacturer for specific recommendations.

Sealing too early can trap moisture in the concrete, which can lead to cracking and other damage. On the other hand, waiting too long to seal can also be problematic. The concrete can become stained or discolored from exposure to the elements, and it may be more difficult for the sealer to properly adhere to the surface.

Once the concrete has cured, you can begin the sealing process. It’s important to ensure that the surface is clean and free of any debris before applying the sealer. This will help the sealer to properly bond with the concrete and provide the necessary protection against water, oil, and other contaminants.

By waiting until the appropriate time to seal your new concrete, you can help ensure its longevity and durability for years to come.

Preparing the Surface for Sealing

Before applying a protective coating, it’s crucial to ensure that the surface is clean and free of debris. Start by removing any loose dirt or debris with a broom or vacuum.

Next, use a pressure washer or hose to thoroughly clean the surface. Be sure to remove any oil stains or other contaminants with a degreaser and scrub brush. Allow the surface to dry completely before proceeding.

Once the surface is clean and dry, it’s important to test its porosity. Sprinkle a few drops of water on the surface to see if it beads up or soaks in. If it beads up, the surface is not porous enough and will need to be etched with an acid solution to create a better bond for the sealer. Follow the manufacturer’s instructions carefully when using an acid solution and be sure to wear protective gear.

After the surface is clean, dry, and properly prepared, it’s time to apply the sealer. Be sure to choose a sealer that is appropriate for your specific type of concrete and follow the manufacturer’s instructions for application.

Apply the sealer evenly with a brush or roller and allow it to dry completely before walking or driving on the surface. A properly sealed surface will protect your concrete from weathering, staining, and other forms of damage, extending its lifespan for years to come.

Applying the Sealer

Now it’s time for you to apply the sealer to protect your surface from weathering, stains, and other damages, extending its lifespan for years to come.

Before you begin, ensure that the surface is completely dry and free from any debris or residue. You can use a broom or vacuum to remove any loose dirt or dust.

When applying the sealer, it’s important to follow the manufacturer’s instructions. Typically, you’ll need to use a paint roller or sprayer to evenly distribute the sealer onto the surface. Be sure to apply the sealer in thin, even coats to avoid any pooling or bubbling.

Allow the sealer to dry completely before applying a second coat, if necessary.

After you have applied the sealer, be sure to allow the surface to dry completely before walking or driving on it. Depending on the type of sealer used, it may take several hours or even a full day to dry completely.

Once the sealer has dried, your concrete surface will be protected and ready to withstand the elements for years to come.

How Many Coats of Sealer Do You Need?

To ensure maximum protection for your surface and avoid future damages, you should consider how many coats of sealer are needed before applying it. The number of coats you need will depend on several factors such as the type of sealer, the age of the concrete, and the level of exposure to elements like UV rays and water.

Here are some general guidelines to help you determine how many coats of sealer you need:

  1. For brand new concrete, you may need just one coat of sealer to create a protective barrier against moisture, stains, and other potential damages. However, if the concrete is porous or has a rough surface, you may need to apply multiple coats to ensure that the sealer penetrates deeply and fills all the pores and cracks.

  2. For older concrete that has been exposed to weathering and traffic, you may need to apply multiple coats of sealer to restore its strength and durability. This is especially true for concrete that has been damaged by freeze-thaw cycles, chemical spills, or heavy foot or vehicle traffic. By applying multiple coats of sealer, you can help fill in any cracks or gaps in the concrete and create a stronger, more resilient surface.

  3. If you live in an area with harsh climate conditions, you may need to apply more coats of sealer to protect your concrete from the damaging effects of UV rays, rain, snow, and ice. In general, the more coats you apply, the better protected your concrete will be against these elements. However, keep in mind that applying too many coats can lead to a buildup of sealer that may make the surface slippery or prone to peeling or flaking.

  4. Finally, it’s important to follow the manufacturer’s instructions when it comes to applying sealer. Some sealers may require multiple coats to be applied within a certain timeframe, while others may only need one coat. By following these instructions, you can ensure that you’re applying the right amount of sealer for your specific surface and environment. Remember, the goal is to create a strong, durable, and long-lasting protective barrier against moisture, stains, and other potential damages.

By considering these factors and following the manufacturer’s instructions, you can determine how many coats of sealer you need to apply to your concrete surface. Whether you’re sealing a brand new surface or restoring an old one, the right amount of sealer can help protect your concrete and keep it looking great for years to come. So, take the time to choose the right sealer and apply it correctly, and you’ll be rewarded with a strong, durable, and beautiful concrete surface.

Curing Time and Maintenance

Let’s talk about how long you’ll need to wait and how to maintain your freshly sealed surface. After applying the sealer, you’ll need to wait for it to cure before using the surface. The curing time will depend on the type of sealer you use and the weather conditions. Generally, you’ll need to wait for at least 24 hours before walking on the surface and up to 7 days before driving on it.

During this time, make sure to keep the surface dry and avoid any foot or vehicle traffic. Once the sealer has fully cured, you’ll want to make sure to maintain the surface to keep it looking great for years to come.

Regular cleaning is important to remove any dirt or debris that can scratch or wear down the sealer. Use a mild detergent and water to clean the surface, avoiding any harsh chemicals that can damage the sealer.

You may also want to reapply a new coat of sealer every 2-3 years to ensure maximum protection and longevity. Remember, proper curing and maintenance are crucial for a successful sealing job. Be patient during the curing process and take care to maintain the surface regularly.

By following these tips, you can enjoy a beautifully sealed concrete surface that will last for years to come.

Common Mistakes to Avoid When Sealing Concrete

Avoid common mistakes when sealing your surface to ensure a long-lasting and beautiful finish. One of the most common mistakes is not thoroughly cleaning the concrete surface before sealing. Any dirt, dust, or debris left on the surface can prevent the sealer from properly bonding to the concrete, leading to premature deterioration.

Make sure to sweep, pressure wash, and let the surface dry completely before sealing. Another mistake to avoid is applying too much sealer. This can lead to surface bubbling, cracking, and a milky white appearance.

It’s important to follow the manufacturer’s instructions and apply the sealer in thin, even coats. Also, avoid applying sealer in direct sunlight or on a hot surface, as this can cause the sealer to dry too quickly and not properly bond to the concrete.

Lastly, don’t rush the process. Allow the sealer to fully dry and cure before walking or driving on the surface. This can take anywhere from 24 hours to several days, depending on the type of sealer and weather conditions.

Rushing the process can cause the sealer to peel or wear off prematurely, leading to costly repairs in the future. Remember, patience is key when it comes to sealing your concrete surface.

DIY vs. Hiring a Professional

If you’re wondering whether to DIY or hire a professional for your next concrete sealing project, you’ll want to consider the benefits and drawbacks of each option.

While the DIY route may seem more cost-effective, it can also be time-consuming and risky if you’re not familiar with the process. On the other hand, hiring a professional can ensure a high-quality job and save you from potential mistakes.

When deciding whether to DIY or hire a professional, it’s important to consider your level of expertise and the scope of the project. If you have experience with concrete sealing and feel confident in your abilities, then DIY may be a viable option. However, if you’re unsure of what to do or the project is too large, hiring a professional may be the better choice.

Professionals have the necessary tools and knowledge to get the job done efficiently and effectively.

Ultimately, the decision to DIY or hire a professional comes down to your own preferences and abilities. While DIY can save money, it can also be risky and time-consuming. Hiring a professional may cost more, but it can ensure a high-quality job and save you from potential mistakes.

Consider your level of expertise and the scope of the project before making a decision.

Cost of Sealing New Concrete

You’re probably wondering how much it’ll cost to protect your beautiful new concrete surface and ensure it lasts for years to come. Well, the cost of sealing your new concrete can vary depending on several factors.

Such factors include the size of the area, the type of sealer you choose, and whether you decide to do it yourself or hire a professional. Sealing your concrete is a worthwhile investment that can help prevent damage from elements like water, oil, and UV rays, which can cause cracking, fading, and discoloration.

If you decide to seal your concrete yourself, you can expect to spend anywhere from $0.15 to $0.75 per square foot on materials, depending on the type of sealer you choose. For example, solvent-based sealers tend to be more expensive than water-based sealers, but they offer better protection and longer-lasting results. You’ll also need to factor in the cost of any additional tools or equipment you might need, such as a sprayer, roller, or brush.

However, if you’re not confident in your ability to apply the sealer correctly, hiring a professional might be a better option. The cost of hiring a professional to seal your new concrete can range from $0.50 to $2.00 per square foot, depending on the complexity of the job and the experience of the contractor.

While this may seem like a significant investment up front, it can save you time and money in the long run by ensuring that your concrete is properly sealed and protected. Plus, professional contractors have access to high-quality materials and equipment that may not be available to the average DIYer. Ultimately, the cost of sealing your new concrete will depend on your specific needs and budget, so it’s important to weigh your options carefully before making a decision.


Congratulations! You’ve successfully sealed your new concrete.

By taking the time to properly prepare the surface and apply the appropriate sealer, you’ve ensured that your concrete will be protected from stains, weathering, and other damaging factors.

Remember to allow adequate curing time before subjecting the concrete to heavy foot or vehicle traffic. Additionally, regular maintenance such as cleaning and reapplication of sealer as needed will help to prolong the life of your concrete.

If you chose to hire a professional for the job, make sure to choose a reputable company with experience in concrete sealing. However, if you decided to tackle the project yourself, pat yourself on the back for a job well done.

Sealing concrete may seem daunting, but with the right tools and knowledge, it’s a manageable DIY project. Don’t forget to factor in the cost of sealing new concrete when budgeting for your project.

In the end, your investment in sealing your new concrete will pay off in spades by protecting and preserving your concrete for years to come.