This post was most recently updated on January 26th, 2022
Siloxane Based Concrete Sealers Update
In this updated article, we talk about Siloxane Based Concrete Sealers. If you have encountered any issues and have any suggestions or have any questions, please comment below.
Penetrating Siloxane Concrete Sealers
Siloxane Based Sealers are Best for Poured Concrete, Brick, and all Masonry Surfaces.
Siloxane, not to be confused with Silicone, is a chemical that is used to formulate siloxane-based concrete and paver sealers. Siloxane-based sealers can be water or solvent-based although the water-based blend of siloxane sealers is lower in VOC and more compliant in certain states.
These siloxane sealers are popular among homeowners because they are user friendly and easy to apply. They penetrate into the surface and react to cause a hardened barrier within the substrate pores. They do not stay on top of the surface like other sealers.
The siloxane-based sealers, penetrate up to a ¼ inch deep to create a durable barrier against moisture and liquid absorption. It is best used on concrete, pavers, bricks, stone, retaining walls, and more. The clear, natural finish does not affect the appearance of the surface.
Other types of these sealers are a hybrid blend of siloxane and silanes. These include SuperSeal M and Masonry Saver Heavy Duty Water Repellent, also known as Defy. With the 100% breathable capabilities of a siloxane and silane-based sealer, they are not prone to peeling or flaking like other moisture trapping sealers.
Applying siloxane-based sealers is easy enough for almost any homeowner to do. They can be applied using a brush, roller, or for larger areas a pump sprayer can be used. They may appear milky when they are first applied but then dry clear within 20-30 minutes.
Substrates sealed with siloxane-based sealers will repel water within one day and will not allow moisture penetration. Locking out moisture is the key to maintaining paver and concrete surfaces. When water is allowed to be absorbed into substrates, it can cause a wide array of damage.
Salts and de-icing chemicals are extremely hard on concrete surfaces. Oil and other spills that penetrate can leave permanent staining. In colder climates, freeze/thaw damage is a huge concern. Sealing your hardscape surfaces with a siloxane-based sealer will prevent these unwanted occurrences from happening by repelling moisture and stains to leave your surfaces looking new.
The siloxane/silane/silox sealer types react chemically with the concrete, creating an internal seal. Most will last 5+ years. An excellent choice for sealing and water-repelling all exterior concrete surfaces without changing the appearance of the substrate.
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