Water Based Concrete Sealer

  • January 29, 2020
  • / By Dale Keese
water based concrete sealer

Water-based sealers are high-performance sealers with a low sheen and are generally low in VOC. The polymer particles are typically dispersed in water in a water-based sealer and when the water-based sealer is applied to the concrete surface, the polymer particles get closer when the water evaporates. As the water continues to evaporate, the particles get deformed and bond together, forming a clear and continuous coating.

Facade with Decorative Concrete Flooring

The formulation of water-based sealers allow easy application and they are quick drying with excellent adhesion to the surface and also offer good general protection for the concrete surface. When they are applied to the concrete surface, water-based sealers turn milky white, as the polymer particles scatter visible light differently compared to the water in which the particles are dispersed, but the surface turns clear on drying.

Water-based concrete sealers do not darken the concrete surface like solvent-based sealers and so, the surface looks more natural. These sealers generally enhance the color of the surface moderately and provide a low-gloss, matte finish. However, water-based sealers do not offer the same levels of shine and gloss that is offered by solvent-based concrete sealers.

Some of the advantages of using water-based concrete sealers are that they are not inflammable, they do not release hazardous vapors or strong odors of solvent sealers, and they are environment-friendly. Once the application is complete, the clean-up is very easy and quick. Water-based concrete sealers are generally safer for use indoors, especially when you have people, kids, and pets around.

Overall, water-based sealers are a good choice if you are looking for a high-performance, low-VOC concrete sealer that is easy to work with and is very durable.

Uses

The uses of water-based sealers include:

  • Decorative concrete surfaces
  • Indoor concrete surfaces such as floors and countertops
  • Outdoor concrete surfaces

Application

Water-based sealers are much easier to apply and can be sprayed using a plastic garden sprayer, a paint roller, airless sprayer, synthetic closed-loop mop, or synthetic fiber pad to apply the sealer. Water-based sealers dry quickly and in warm weather, they will not flash dry.

If you are applying more than one coat, let the first coat dry completely before applying the next one. Ensure that when you are applying the water-based concrete sealer, the humidity is 65% or less and do not let moisture on the surface for a minimum of 12 hours. It is a good idea to apply a coat of wax on the sealer; however, this should be done only 24 to 48 hours after the water-based sealer coats completely cure.