Sealing is an essential step to enhance concrete’s durability, improve its appearance and protect it from damage caused by moisture, chemicals and weather exposure. Different methods and sealants are available, each tailored to specific needs and applications. Here’s a guide to the most popular options for sealing concrete.
Polyurethane Sealers
For a thicker and highly durable layer of protection, polyurethane sealers are a top choice. These sealers form a high-build protective film that resists abrasion and chemicals. Available in water and solvent-based formulas, polyurethane sealers can be applied to both interior and exterior concrete, creating a non-yellowing, transparent finish that is highly resilient.
Penetrating Sealers
Penetrating sealers, including silanes, siloxanes, silicates and siliconates, work by soaking into the concrete to form a chemical barrier. This barrier protects against moisture, de-icing chemicals and harsh outdoor conditions without altering the concrete’s appearance.
These sealers are breathable, allowing moisture vapour to escape, making them perfect for use on outdoor surfaces exposed to heavy wear and environmental stress.
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Acrylic Sealers
Acrylic sealers are a cost-effective and versatile option, ideal for outdoor surfaces like driveways, patios and sidewalks. They create a protective film that resists oil, salt and UV exposure.
Available in solvent-based and water-based formulas, these sealers are non-yellowing and enhance the appearance of stamped, coloured or exposed-aggregate concrete. With various sheen levels to choose from, acrylic sealers are a great choice for both protection and aesthetic appeal.
DensiCrete
DensiCrete is a penetrating sealer that chemically reacts with the silica in concrete to form new bonds. This process fills capillaries and cracks, creating a permanent barrier to moisture. DensiCrete not only densifies the concrete but also expels oils and salts during application.
Sealing is vital for preserving concrete’s structural integrity and aesthetic appeal. Each method has unique benefits, so choosing the right sealant ensures your concrete remains protected and attractive for years to come.
