Construction Home Improvement

How to Apply Coloured Concrete Sealers Properly

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Coloured concrete sealers make your concrete more resistant to grease, weather exposure, water, and oil stains, abrasion, and deicing salts. What’s more, they will assist in bringing out the natural beauty of your concrete and make it easier to clean. But for a coloured concrete sealer to work its magic, it must be appropriately applied. Each stage, from surface preparation to choosing the right application tool, will have a significant impact on the outcome.

Below are some tips for applying coloured concrete sealer correctly. Whichever the brand of sealer you use, be sure to follow the specific instructions recommended by the product manufacturer.

When to seal concrete

When you apply coloured concrete sealer can be essential as well. Allow new concrete to cure completely. Most sealers should be used under dry conditions, since applying a coloured concrete sealer to damp concrete could cause loss of adhesion or haziness. Air temperatures are also essential and should typically be 50°F and above and for at least 24 hours after sealer application. Always allow the concrete sealer to dry completely before exposing it to vehicle traffic or foot. Drying times should be three days before exposure to heavy traffic.

Preparing concrete for sealing

Surface preparation before applying a coloured concrete sealer to existing concrete is vital. All oil, grease, dust, stains, and dirt must be removed, or they may prevent the sealer from adhering correctly. Also, if a coloured concrete sealer is being applied over a different brand of sealer, most manufacturers’ advice removing traces of previously used sealers, because the products may not be compatible. Manufacturers recommend etching the surface with an etching solution to ensure the best adhesion.

How to apply a concrete sealer

By using the right tools is critical to achieving the best coverage rate and sealer thickness for optimal performance. The two most common techniques of applying coloured concrete sealers to concrete surfaces are by sprayer or roller, often depending on whether the sealer is a solvent- or water-based. Refer to the manufacturer application instructions.

Whether you are spraying or rolling, applying a coloured concrete sealer, always strives for maximum coverage. The approximate coverage rate is 250 to 300 square feet per gallon, depending on the concrete porosity. The most basic rule to remember is that less is more. It is best to apply two thin coats, making sure the sealer doesn’t puddle or form uneven, thick areas. When using a second coat of sealer, apply it in the opposite direction of the first coat to ensure even coverage. Then wait to apply the second coat of sealer for the time recommended by the manufacturer.

With many types of coloured concrete sealers and brands in the market, it may be a daunting task to select one to purchase and apply for your project. Before choosing a coloured concrete sealer, it’s essential to understand the various uses of the main types and to have a good understanding of what qualities you’re looking for regarding protecting your surface and the appearance you want it to have.

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