How long do concrete sealers last? In order to effectively answer this question we first need to determine the type of concrete sealer that was used in order to determine the longevity of it. We have broken down concrete sealers into the following categories:
Decorative Concrete Sealers: decorative concrete sealers usually refer to acrylic or lacquer based products. They add color enhancement, shine, wet look and gloss finishes to concrete. They have the shortest longevity; since they sit on the surface of the concrete and do not penetrate into the concrete they are at high risk of UV degradation and wear. Decorative concrete sealers are available as solvent or water based products and can last anywhere from 6 months to 3 years. Solvent based concrete sealers will last longer than water based concrete sealers. Keep in mind that if you like the decorative look you are going to have to pay to keep it up.
Durable Concrete Coatings: durable concrete coatings refer to epoxy and urethane based products. The name “durable concrete coating” is appropriate because they are able to withstand abrasions, chemicals, machinery, equipment and heavy traffic. The most important factor in regards to how long do concrete sealers last is surface preparation. If you do not properly acid etch or grind the floor prior to using this type of coating they will fail much sooner. If the concrete has been properly prepared durable concrete coatings can last upwards of ten years.
Penetrating Concrete Sealers: penetrating concrete sealers are usually silicate, silane, and siliconate based products. They penetrate into the concrete and dry clear; they do not leave any surface enhancement or sheen. Silicate based densifiers last for the life of the concrete. Once they are applied you do not need to apply them again. That being said you do not want to use a silicate based densifier without also using a penetrating water repellent or penetrating waterproofing concrete sealer. Water repellent and waterproofing silane and siliconate based products can last anywhere from 5-10 years. The longevity will depend on UV exposure, deicing salt exposure and vehicle traffic among other factors. We like penetrating concrete sealers because they protect the concrete from salts, water and stains, and they wear extremely well in comparison to decorative concrete sealers.
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