Polishing Concrete: The Importance of Proper Sealing

Polishing Concrete: The Importance of Proper Sealing

When it comes to polishing concrete surfaces, one of the most crucial steps in the process is proper sealing. Not only does sealing help to enhance the appearance of the concrete, but it also serves as a protective layer that can prolong the lifespan of the surface. In this article, we will explore the benefits of sealing concrete and why it is essential for maintaining its durability and aesthetic appeal.

Benefits of Properly Sealing Polished Concrete

Enhanced Durability

Properly sealing polished concrete can significantly enhance its durability. The sealant acts as a protective layer, preventing the concrete from being easily damaged by daily wear and tear. This extra layer can help extend the life of the concrete surface, making it a cost-effective choice in the long run.

Improved Stain Resistance

Sealing polished concrete can also improve its stain resistance. The sealant creates a barrier that repels liquids and prevents them from seeping into the concrete and causing unsightly stains. This is especially important in high-traffic areas or spaces prone to spills, such as kitchens or garages.

Increased Longevity

By properly sealing polished concrete, you can increase its longevity. The sealant helps to protect the surface from damage caused by UV rays, moisture, and other environmental factors that can degrade the concrete over time. This means less maintenance and a longer lifespan for your polished concrete floors or surfaces.

Types of Sealers for Polished Concrete

When it comes to sealing polished concrete, there are several options to choose from. Each type of sealer offers different benefits and is suitable for specific applications. Here are the main types of sealers used for polished concrete:

Penetrating Sealers

Penetrating sealers are designed to penetrate the surface of the concrete and provide protection from within. These sealers work by filling the pores of the concrete, making it resistant to water, oil, and other contaminants. Penetrating sealers are ideal for outdoor applications or areas with high foot traffic.

Film-forming Sealers

Film-forming sealers create a protective film on the surface of the concrete, providing a glossy finish and enhancing the appearance of the floor. These sealers are available in different sheen levels, ranging from matte to high-gloss. Film-forming sealers are suitable for indoor applications where aesthetics are important.


Densifiers are chemical solutions that react with the concrete to increase its density and strength. These sealers penetrate deep into the concrete, filling the pores and creating a harder surface. Densifiers are commonly used on polished concrete floors to enhance durability and reduce dusting.

In conclusion, choosing the right sealer for polished concrete is essential to ensure the longevity and appearance of the floor. Whether you opt for a penetrating sealer, film-forming sealer, or densifier, make sure to follow the manufacturer’s instructions for proper application and maintenance.

Steps to Properly Seal Polished Concrete

Surface Preparation

Before sealing polished concrete, it is essential to ensure that the surface is properly prepared. This includes cleaning the concrete thoroughly to remove any dirt, dust, or debris. It is also important to repair any cracks or imperfections in the concrete to ensure a smooth surface for sealing.

Choosing the Right Sealer

When it comes to choosing a sealer for polished concrete, it is important to consider the type of concrete being sealed and the desired finish. There are different types of sealers available, including penetrating sealers, topical sealers, and decorative sealers. It is important to choose a sealer that is compatible with the concrete and will provide the desired level of protection and enhancement.

Application Techniques

The application of the sealer is crucial to ensuring a proper seal and a beautiful finish. It is important to follow the manufacturer’s instructions for the specific sealer being used. In general, the sealer should be applied evenly and in thin coats to avoid uneven coverage or pooling. It is also important to allow the sealer to dry completely between coats and before allowing foot traffic on the surface.

By following these steps to properly seal polished concrete, you can ensure a durable and attractive finish that will enhance the beauty and longevity of your concrete surface.

In conclusion, proper sealing is essential in maintaining the durability and appearance of polished concrete surfaces. By investing in high-quality sealers and following the recommended maintenance practices, property owners can ensure that their concrete floors remain in top condition for years to come. Not only does sealing protect against stains and damage, but it also enhances the overall aesthetic of the space. With the right products and techniques, polished concrete can be a long-lasting and low-maintenance flooring option for both residential and commercial properties.