How to Seal Concrete Like a Pro
Tired of dull, cracked concrete surfaces that detract from the beauty of your home? Learn how to seal concrete like a pro and transform your concrete surface!
Sealing concrete is one of the simplest and most effective ways to protect and enhance the surfaces around your home. Whether it’s your garage floor, concrete driveway, walkways, or even stylish concrete countertops, applying a concrete sealer helps extend their lifespan, shield them from damage, and elevate their appearance.
Concrete is tough, but it’s not indestructible. Over time, exposure to foot traffic, weather, moisture, and daily wear can lead to cracks, stains, and discoloration. A high-quality sealer acts as a barrier, protecting the surface of the concrete from mildew, abrasion, and even yellowing caused by UV rays.
In this blog, we’ll guide you through the process of sealing concrete, from choosing the right type of sealer to applying it step by step. Whether you’re a DIY enthusiast working on sealing your new concrete floors or a homeowner looking to refresh your exterior concrete, this guide will help you achieve professional results.
Before you begin sealing your concrete, it’s essential to understand what a concrete sealer does and which type is best for your project. Choosing the right sealer can make all the difference in the durability, appearance, and lifespan of your concrete surfaces.
A concrete sealer is a protective coating or treatment designed to safeguard the surface of the concrete against moisture, stains, abrasion, and wear. No matter the concrete application type, a sealer helps prevent damage and keeps your concrete surfaces looking their best.
Concrete sealers don’t just protect; they also enhance. For example, topical sealers can add a glossy wet look or a subtle matte finish, while penetrating sealers provide invisible protection by soaking into the concrete and forming a barrier from within.
Concrete sealers come in many types, each serving unique purposes. Penetrating sealers, like siloxane, soak into the concrete, providing long-lasting waterproofing and protection against freeze-thaw cycles—perfect for exterior concrete. Topical sealers, such as acrylic, epoxy, and polyurethane, sit on the surface, offering decorative finishes like a glossy wet look or a subtle matte sheen, making them ideal for indoor use or decorative surfaces.
The success of your sealing project heavily depends on selecting the correct type of sealer for your concrete surface. The type of concrete, its location, and the finish you desire are all important factors in this decision-making process. Here are some factors to consider when choosing a concrete sealer for your project.
The type of surface plays a key role in determining which sealer to choose. For example, garage floors and high-traffic areas demand highly durable options like epoxy or polyurethane sealers, which can withstand abrasion and heavy loads. Outdoor surfaces, such as driveways and walkways, benefit from penetrating sealers, which provide deep waterproofing and protect against weathering without altering the natural look of the concrete. Decorative concrete, such as countertops or interior floors, calls for acrylic sealers that enhance appearance with finishes ranging from matte to high gloss.
The location of the surface also affects the choice. For indoor spaces, water-based sealers are preferred due to their low odor and eco-friendly nature, making them suitable for areas with limited ventilation. On the other hand, outdoor surfaces often perform better with solvent-based sealers, which provide enhanced UV resistance and weather durability, though they emit stronger fumes during application.
Your desired finish can further guide your decision. If you aim for a natural look, penetrating sealers are ideal as they do not alter the appearance of the concrete. However, for a shiny "wet look" or a high-gloss decorative finish, topical sealers such as acrylic, epoxy, or polyurethane are the way to go.
Durability is another key factor. Areas subjected to heavy foot traffic or exposure to harsh conditions benefit from stronger sealers like polyurethane or epoxy, which provide long-lasting, hard coatings. Meanwhile, acrylic sealers are sufficient for decorative purposes but may require more frequent reapplications.
Ease of application can be important for DIY enthusiasts. Water-based and acrylic sealers are typically easier to apply and dry quickly, making them great choices for home projects. Solvent-based and epoxy sealers, while offering excellent durability and finish, may require more preparation and expertise.
Proper preparation is key to achieving a durable and professional-looking finish when sealing concrete. Whether you’re sealing a concrete driveway, garage floor, or countertop, following these steps ensures the sealer adheres well and provides long-lasting protection. Here’s how to get your concrete ready for sealing:
A clean surface ensures the sealer adheres properly and provides uniform coverage. Here’s what to do:
Before applying the sealer, inspect the concrete for any damage. If you have any cracks, repair them with a patching compound or filler. Allow the repairs to cure fully according to the product’s instructions. Also, test for moisture by taping a small piece of plastic to the surface and leaving it for 24 hours. If condensation forms underneath, the concrete may need additional drying time before sealing.
Proper drying is crucial, especially after pressure washing or cleaning with water. For new concrete, wait at least 28 days to ensure it has fully cured before applying a sealer.
Protect walls, landscaping, and adjacent surfaces with painter’s tape or plastic sheeting to avoid accidental application of the sealer.
Choose the right sealer by considering the factors mentioned above. Next up, it is time to gather the required tools for the project. Here are some tools you will need:
Once your concrete is clean, dry, and prepped, it’s time to apply the sealer. Whether you’re sealing a driveway, garage floor, or countertops, following the right steps ensures a smooth, durable, and long-lasting finish. Here are some easy-to-follow steps for sealing your concrete surface:
The first step in applying a concrete sealer is to apply the first coat. Always apply thin coats to avoid pooling and streaks. Using a sprayer for large areas, like a driveway, helps achieve even coverage. For smaller areas, a roller or brush works well. Divide the surface into manageable sections, especially for large areas like concrete floors or slabs. Refer to the instructions on your chosen sealer for details on coverage, drying time, and application techniques.
Ensure the area is free from foot traffic or other disturbances while the sealer dries. Drying times vary depending on the type of sealer:
Many projects benefit from a second coat for enhanced protection and appearance. But before you apply the second coat:
Once the second coat is applied, and you are happy with the sealers, allow it to cure fully before heavy use. Most sealers require at least 24–72 hours for full curing. Don’t forget to clean your sprayers, rollers, or brushes immediately after use with water (for water-based sealers) or solvent (for solvent-based sealers).
After sealing your concrete, proper maintenance is crucial to ensure it stays protected and looks its best for years to come. Routine care not only prolongs the lifespan of the sealer but also prevents damage from foot traffic, moisture, and weather exposure. Here are some tips for maintaining your sealed concrete surfaces.
For interior surfaces (e.g., floors, countertops), you can dust or vacuum regularly to remove debris that can cause abrasion. Wipe down with a mild cleaner and water. Avoid harsh chemicals that can degrade the sealer. To clean exterior surfaces, sweep or rinse with a hose to clear away dirt and debris. Use a pressure washer occasionally to remove built-up grime or mildew, but avoid high-pressure settings that may damage the seal.
Steer clear of acidic or abrasive cleaners, as they can break down the sealer over time. For stubborn stains, use a pH-neutral cleaner that’s safe for sealed concrete.
Inspect your concrete regularly for signs that the sealer is wearing thin, such as:
Penetrating sealers typically last 5–10 years, depending on the quality and traffic levels. Topical sealers, like acrylic or epoxy, may require reapplication every 1–3 years. When it is time to reapply the sealer, follow the same steps for sealing, ensuring the surface is clean, dry, and free from old sealer residue.
Use protective mats or rugs in high-traffic areas or under furniture to prevent abrasion. For outdoor surfaces, repair any concrete cracks promptly to avoid moisture penetration.
Winter Maintenance
UV Protection
Schedule a deep clean at least twice a year, especially for high-use areas like driveways or garage floors. Use a degreaser for oil or grease stains, followed by rinsing and light scrubbing.
Even with the best intentions, mistakes during the sealing process can lead to poor results, uneven finishes, or the need for rework. Avoid these common pitfalls to ensure your concrete surface looks flawless and lasts for years.
A dirty or uneven surface prevents proper adhesion of the concrete sealer to the surface. To avoid this, always clean thoroughly with a pressure washer or degreaser and repair cracks before sealing.
The wrong concrete sealer may not provide adequate protection or the desired finish. Hence homeowners need to match the sealer to their project’s needs. Also, some sealers may alter the color or appearance of your concrete unexpectedly. Test a small, inconspicuous area before applying the sealer to the entire surface.
Applying thick coats of the sealer can cause pooling, bubbling, or uneven drying. This is why we recommend you apply thin coats, You can do this by using a sprayer, roller, or brush, and ensure even distribution across the surface.
We understand the need to finish DIY projects quickly, but rushing the process or applying a second coat before the first dries can lead to poor adhesion or sticky surfaces. Hence it is important to follow the manufacturer’s instructions for drying times between coats and final curing time.
Changes in temperatures can affect how the sealer cures and adheres. If possible apply sealer in mild conditions, ideally between 50–85°F, and avoid sealing in direct sunlight or freezing weather.
Edges and corners are often overlooked, leaving parts of the surface unprotected. Use a brush or smaller roller to reach edges, corners, and tight spaces for complete coverage.
Over-application of concrete sealer can create buildup, causing a cloudy or uneven finish. Only reapply when signs of wear are visible, such as diminished water resistance or fading of the finish.
Each sealer has unique properties, and not following the instructions can lead to subpar results. Carefully read and adhere to the application, drying, and maintenance guidelines provided by the manufacturer.
Sealing concrete is a valuable step that transforms and protects concrete surfaces, whether it’s a durable garage floor, a beautiful concrete countertop, or a weather-resistant driveway. By understanding the types of sealers, preparing your surface properly, and following the right application techniques, you can achieve a professional finish that lasts for years.
From preventing cracks and stains to enhancing the look of your concrete with a matte or glossy finish, sealing offers both practical and aesthetic benefits. Remember to choose a high-quality sealer suited to your project, apply thin coats, and follow the manufacturer’s instructions for the best results.
Regular maintenance, including cleaning and periodic resealing, will ensure your sealed concrete stands up to foot traffic, weather, and everyday use. With the knowledge and tips shared in this guide, homeowners and DIY enthusiasts alike can confidently tackle concrete sealing projects and enjoy the long-lasting beauty and functionality of their surfaces.
Concrete & Pavement Guides
Concrete & Pavement Guides
Concrete & Pavement Guides
