Sealing your concrete surfaces is one of the ways to protect them and ensure that they serve their purpose well, besides extending their lifespan. Film-forming and penetrating concrete sealers are the common types of sealers available on the market.
Whilst they perform the same purpose, concrete floor sealing products have different working mechanisms. Read on to find out more.
Film-forming sealers are common for decorative purposes on concrete, and for protection against staining and contamination. The three types of film-forming sealers are available in solvent and water-based varieties, and they include:
Acrylics – These are suitable for outdoor and indoor surfaces. Whilst they are easy to apply and cost-effective, acrylics require a regular application.
Polyurethane sealers – These are thicker than acrylic sealers. They offer extra protection against abrasive material and chemicals. These are ideal for areas that are usually exposed to water or moisture, such as bathrooms, spas and basements.
Epoxy Sealers – These are effective at creating a finish that reveals the decorative features on the surface of the concrete. Epoxy sealers, however, come in different colours and density variants.
Unlike film-forming sealers, penetrating sealers react within the concrete surface and fill the pores with a hydrophobic coating. The layer prevents the penetration of water and other materials into the concrete. Penetrating sealers protect the concrete without altering the outside appearance. Most penetrating sealers are impermeable and will not allow moisture in the concrete.
The clear finish that penetrative sealers offer makes them ideal for use in outdoor surfaces, such as pools that need decoration and protection from harsh elements. Some penetrative sealers are only suitable for indoor use.
Regardless of your application, it is important that you use the right type of sealer for the job. But understanding the differences between the types of sealers is the first step in choosing the best one.