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Concrete Sealers and Water Repellents 3/5 (2)

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 the 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 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 last 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 of 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 an 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: May need to be rolled on. “Cheap” or over applied acrylics may turn white or blush from trapped moisture or over application.

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 they 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 is 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 that 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 you 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 log run if you choose properly.

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