How to Seal Concrete

People may assume that once concrete has been poured and tooled to a nice finish then their work is done. This seems logical since concrete is a durable and nearly impervious material. But to keep your investment looking its best, you should be sure to take the added precaution of applying a good sealer. Concrete sealers not only bring out its beauty, they also protect it from the effects of weather, oils, grease, and salt.


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    Get your supplies ready. You will need a broom or blower and a good concrete cleaner. For applying the sealer you will need a roller, a garden pump sprayer, or a pneumatic low pressure sprayer. You will likely want to have a good pair of rubber gloves and wear eye protection.
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    Clean the surface of the concrete thoroughly. Use a good cleaner that will remove any oils, stains, or grease. Use a stiff bristled brush or broom to scrub the surface and rinse it off with a hose. For the best results, use a power washer. Before applying the sealer make sure the concrete is dry.
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    Patch or repair any defects in the concrete. Doing so after cleaning the surface makes for a smooth even substrate for the sealer to adhere to.
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    Before applying the sealer make sure to stir it thoroughly but do not shake it. Shaking the sealer may cause bubbles which can adversely affect the appearance of the sealed surface.
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    Apply the sealer with a roller or sprayer in an even pattern, making sure to avoid puddles. This is especially important if you are using a sealer that will add color or sheen to the concrete. Make sure you complete the entire project at one time.
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    Allow the sealer time to dry before using the concrete surface. This will vary according to the manufacturer’s recommendations.

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Categories: Concrete