Epoxy Concrete Sealer

  • February 27, 2020
  • / By Dale Keese
epoxy concrete sealer

Epoxies are essentially a thermosetting polymer coating which also acts like a concrete sealer. This type of concrete sealers form a high-build film on the surface of the concrete and produce a hard finish which is resistant to abrasion and wear. Epoxy sealers are also water repellent.

Our pick for the best epoxy concrete sealer is the Rust-Oleum Epoxy Shield due to its high resistance to contaminants and corrosion. Perfect for garage floors due to its resistance to oil, grease, gas & other spills.

Click here to see our review.
Rust-Oleum EpoxyShield

Epoxy sealers are available in three formulations: 100% solids and water- and solvent-based, which are used in varying thicknesses between 3 mils to more than 10 mils for a single coat. Epoxy concrete sealers are easy to apply and are available in varying VOCs.

Epoxy concrete sealers are available in two varieties, clear or pigmented, that lets you add color to the concrete surface. Most epoxy sealers offer a glossy finish and they are much harder compared to acrylic sealers.

Water-based epoxy sealers offer a clear finish and adhere well with the concrete surface; however, they are nonporous and do not allow the moisture that is trapped inside to escape. Epoxy sealers are ideal for areas where food is prepared and for concrete countertops. Epoxies bond quite well to concrete that is properly prepared and are also sometimes used on old or worn concrete as resurfacing agents and also to repair cracks, pitting, and surface repairs on concrete.

Concrete Counterop

Epoxy sealers containing high to 100% solids are considered the best epoxy formulations and are very thick, hard, and impact-resistant. This thickness helps to fill out the imperfections on the surface of the concrete, fill hairline cracks, and also provide a high-build coating to protect the surface.

Epoxies resist wear due to abrasion and also are resistant to hot tire pickup. Although several epoxy formulas come with UV inhibitors, when exposed to sunlight, they eventually will turn yellow.


Epoxy sealer uses include:

  • Concrete countertops
  • Food preparation areas
  • Floors in high-traffic areas
  • Cement-based overlays


Most epoxy sealers are products that consist of two components that must be mixed before application. When you mix the epoxy sealer, you must apply the material immediately, before it starts to set. Epoxy sealers are quite viscous and have high solid content and so they are best applied using a squeegee and then rolled with a lint-free roller.

Generally, epoxy sealers are used indoors because they may turn yellow when exposed to UV rays. A high-gloss clear epoxy sealer is ideal for decorative floors and will not only protect the floor from wear and abrasion but also augment the color and enhance the floor’s design.