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The Science Behind Concrete Sealing: How Sealants Provide Long-Lasting Protection

08 May 2024

Concrete Sealers

Discover the science behind concrete sealing with Auseal and how sealant provides the needed protection for concrete surfaces. Explore its benefits today!

Concrete sealing is an important aspect of construction and maintenance as it can protect concrete surfaces from damaging elements. Concrete is a widely used construction material known for its durability and strength. Surfaces out of this material, however, are susceptible to damage from moisture, chemicals, UV exposure, abrasion, and other sources.

The process of concrete sealing, fortunately, can help overcome these issues. It generally involves the application of protective sealants to concrete surfaces, enhancing their durability, longevity, and appeal.

Sealants in Concrete Protection

Sealants serve as a protective barrier for concrete surfaces, shielding them from environmental elements and preventing deterioration. They penetrate the porous structure of concrete, filling voids and capillaries to create a barrier against moisture intrusion, chemical ingress, and surface abrasion. By sealing the concrete surface, sealants help to maintain its structural integrity, minimise cracking and spalling, and prolong its service life in harsh conditions.

The effectiveness of concrete sealants lies in their chemical composition and formulation. Most sealants are based on polymers such as acrylics, epoxies, polyurethanes, or silanes/siloxanes. These polymers form a protective film or barrier on the concrete surface, imparting water repellency, chemical resistance, UV stability, and durability. Additionally, sealants may contain additives such as reinforcing fibres, UV inhibitors, or antimicrobial agents to enhance performance and longevity.

Concrete Sealing: Main Benefits

When you conduct concrete sealing on your concrete surfaces, expect to gain the following benefits.

•  Thorough Waterproofing: Concrete sealants create a waterproof barrier that prevents moisture penetration into the concrete substrate, reducing the risk of water-related damage such as efflorescence, freeze-thaw damage, and corrosion of reinforcing steel.

•  Boosted Chemical Resistance: Sealed concrete surfaces are resistant to chemical spills, oil stains, and contaminants, making them easier to clean and maintain. This chemical resistance preserves the appeal and integrity of concrete in industrial, commercial, and residential settings.

•  Long-lasting UV Protection: UV-resistant sealants protect concrete surfaces from UV degradation and colour fading caused by prolonged exposure to sunlight. This UV protection maintains the aesthetic appeal and structural integrity of outdoor surfaces like driveways, patios, and walkways.

•  Enhanced Appearance: Sealants enhance the appearance of concrete surfaces by enhancing colour, sheen, and texture. They may provide a glossy or matte finish, highlighting the natural beauty of concrete while offering protection against wear and weathering.

Auseal concrete products can provide all these benefits to property owners like you, making sure your concrete surfaces will be waterproof, chemical resistant, protected from UV, and appealing.

Application of Concrete Sealants

Concrete sealing involves several key steps, including surface preparation, sealant selection, application method, and curing. Surface preparation is critical and may include cleaning, etching, or repairing the concrete surface as needed. The sealant is then applied using techniques such as spraying, rolling, or brushing, ensuring complete coverage and uniformity. After application, the sealant is allowed to cure according to manufacturer guidelines, forming a durable protective barrier.

By understanding the science behind concrete sealing and selecting the right sealants and application techniques, you can ensure long-lasting protection against moisture, chemicals, UV exposure, and abrasion. With proper maintenance and regular resealing, sealed concrete surfaces can maintain their durability, aesthetic appeal, and structural integrity for a long time.

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