Concrete Sealers and Water Repellents  3/5 (2)

This post was most recently updated on February 23rd, 2024

Updated for 2024: Concrete Sealers and Water Repellents

In this updated article, we talk about the different Concrete Sealers and Water Repellents. If you have encountered any issues and have any suggestions or questions, please comment below.

Concrete Sealers are used to protect and enhance all types of Interior and Exterior concrete surfaces. They can provide water repellency for driveways and brick walls or enhancement for decorative concrete surfaces such as Stamped Patios or Pavers.

In this article, we will look at the many different types of Concrete Sealers, Coatings, and Water Repellents.

Concrete Sealers and Water Repellents

Concrete sealants and water repellents are the most popular of concrete coatings. These sealers are designed to penetrate deep into the surface without filming on top. They typically do not change the appearance of the surface. These sealers are composed mainly of different types of silicones. Silane, siloxane, and silox are the most common forms used. These particles penetrate deep into the concrete, reacting with the alkali. This creates an internal bond that seals out water, dirt, grime, and common spills. These sealers work exceptionally well and do come in different solids amounts ranging from 8-24%. Higher solids are typically for a very porous block while lower solids are for smoother concrete surfaces.

Available in both water-based and solvent-based formulas.

Pros: Very easy to apply. Typically lasts 4-6 years for most applications.

Cons: None

Brick Paver Sealers

Brick paver sealers are specific to paver patio, walkways, and driveways. These sealers typically have two to three functions. First is that they seal and protect the paver bricks. Second is that many will help solidify or stabilize paver jointing sand. Thirdly and most importantly is that paver sealers typically will enhance the appearance with a wet look and or gloss/shine. Brick paver sealers typically contain acrylic of some sort. The acrylic is what enhances the appearance.

Available in both water-based and solvent-based formulas.

Pros: Enhances appearance. Seals and stabilizes sand joints.

Cons: It May need to be rolled on. “Cheap” or overapplied acrylics may turn white or blush from trapped moisture or overapplication.

Stamped Concrete and Stained Concrete Sealers

Stamped concrete, stained concrete, and acid-stained sealers are very similar if not the same as a brick paver sealer. They are designed to seal and enhance the decorative concrete surface. They are mainly composed of acrylics or aliphatic urethanes.

Available in both water-based and solvent-based formulas.

Pros: Enhances and seals surface.

Cons: May turn white from over application.

Vertical Brick and Chimney Water Repellents

Brick and chimney sealers contain similar properties as concrete sealers. They are more suitable for penetration into vertical bricks. Typically do not change the appearance. Great for preventing rain and water from penetrating or seeping into through walls.

Mostly water-based formulas.

Pros: Easy to apply with a garden sprayer.

Cons: None

Masonry Brick and Block Water Repellents

Masonry brick and block are typically high in porosity. These types of concrete require a sealer or water repellent with a high solid content of 15%-30%. This allows the siloxanes to fill the larger voids providing proper protection for commercial-type buildings.

Mostly water-based formulas.

Pros: More costly due to higher solid content. Easy to apply.

Cons: None Suggestions

Make sure that when researching your concrete sealers, you first understand what type of surface you have and if you want to keep the same appearance or change the appearance. Never choose a sealer from your local paint store, HD or Lowes. These sealers have known issues and fail or discolor quickly. Purchase your sealer from a local store that specializes in concrete, brick paver, and masonry supplies, or buy online from respected outlets. Choosing a high-end concrete sealer or coating will save money in the long run if you choose properly


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4 years ago

What sealer would you recommend? We have a partial berm home with majority of windows facing south (Iowa)-so lots of sunlight/UV exposure. Concrete is our final floor finish, and we have used a water based stain. We do not want a gloss/high shine finish, appreciate durability, as house is in the country – so will have dust & dirt/need to be cleaned regularly. Prefer as simple application as possible – we are doing this ourselves. Thank you!

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