5 Types of Concrete Sealers and Their Applications
Feb 21, 2024

Concrete is a versatile and durable material used widely in construction. While it is a high-strength material, external factors or lack of maintenance can wear out or degrade concrete surfaces over time. Such surfaces can become vulnerable to cracking, staining, and moisture intrusion. One way to reduce this vulnerability is to protect the surface by applying concrete sealers.
Essentially, all types of concrete sealers add a protective layer over concrete surfaces to enhance longevity and appearance. The degree and type of coverage vary from one type of concrete sealer to another. Before buying a concrete sealer, you must understand which type of concrete sealer will be best for the concrete surface you want to safeguard against deterioration.
Here we explore five popular types of concrete sealers and their applications, along with tips for choosing the right one for your project.
1. Penetrating Sealers
Penetrating sealers absorb into the concrete and form a chemical barrier within the material. They are particularly effective for protecting against moisture, chemicals, and freeze-thaw cycles. These are Ideal for exterior surfaces like driveways, patios, and sidewalks. Penetrating sealers preserve the natural appearance of the concrete, providing long-lasting protection. They are an excellent choice for concrete waterproofing in areas exposed to harsh weather.
2. Acrylic Sealers
Acrylic sealers are surface coatings that create a thin protective film over the concrete. Available in water-based and solvent-based formulas, they are popular for enhancing the appearance of decorative concrete surfaces. Acrylic sealers provide a glossy or matte finish and are suitable for interior and exterior applications. While they offer moderate protection, they may require regular reapplication, especially in high-traffic areas.
3. Epoxy Sealers
Epoxy sealers are known for their high durability and excellent adhesion properties. These sealers form a thick, hard layer on the concrete surface. This makes them ideal for indoor applications such as garage floors and industrial spaces. Epoxy sealers for concrete waterproofing can resist wear, stains, and chemicals, but they are less suitable for exterior use due to their sensitivity to UV rays.
4. Polyurethane Sealers
Polyurethane sealers are similar to epoxy but offer superior resistance to UV damage. This makes them suitable for indoor and outdoor use. They provide a highly durable and glossy finish that enhances the colour and texture of decorative concrete. Polyurethane sealers are an excellent option for areas prone to heavy foot or vehicle traffic, offering long-lasting protection against abrasion and stains.
5. Concrete Crack Sealers
Concrete crack sealers are specialised products designed to fill and repair cracks in concrete surfaces. They are often used in combination with other types of concrete sealers to provide comprehensive protection. These sealers prevent water and debris from entering cracks, which can lead to further damage over time. For surfaces prone to cracking, applying a concrete crack sealer during concrete waterproofing is essential for maintaining structural integrity and preventing moisture intrusion.
Choosing the Right Concrete Sealer
Selecting the right concrete sealer depends on the specific needs of your project. For example, if moisture protection is a priority, consider penetrating or polyurethane sealers. If aesthetics are important, acrylic waterproofing can enhance the look of decorative concrete. When addressing cracks, always use a reliable concrete crack sealer before applying a surface coating to ensure long-term durability.
For advanced concrete waterproofing and repairs, Trubuild Buildcrete offers an exceptional solution. This acrylic polymer-based compound, when mixed with cement, creates a robust matrix with outstanding waterproofing properties. Trubuild Buildcrete is ideal for applications in toilets, kitchens, bathrooms, terraces, swimming pools, and basements, providing superior protection against water damage.
Investing in the right concrete sealer and complementary products like Trubuild Buildcrete ensures that your concrete surfaces remain strong, beautiful, and long-lasting. With the right approach, you can protect your investment and enhance the durability of your construction projects.