Get matched with top epoxy flooring pros in Palisade, CO

Yes, you can seal old or existing concrete, but proper preparation is crucial. The concrete surface must be clean, dry, and free of any incompatible old sealant. To check if an old sealer is present, drip a few drops of water onto the surface; if the water is absorbed in under five minutes, it's ready to be resealed. If you plan to use the same type of sealer that was previously applied, you may not need to remove the old layer. However, if you are using a different type of sealer, the old one must be completely removed. Before applying the new sealer, thoroughly clean the concrete and repair or fill any cracks to ensure a smooth, well-prepared surface.

It costs between $600 and $8,400 to stain an average-size concrete patio of around 300 square feet. The wide price range accounts for intricate stains that incorporate multiple colors and stenciling, high-end sealers, and special touches, such as stamping or concrete polishing. Prices can also vary if you need to make multiple repairs to your patio before adding the stain and seal.

As with anything you buy, be wary of prices that seem too good to be true. Some low-cost flooring products can contain chemicals that release harmful VOCs (volatile organic compounds) in the form of fumes that can be inhaled or dust that can cause skin conditions.

Even good-quality products can be dangerous for DIY-ers who don’t take proper precautions. Always carefully read manufacturer instructions and wear the recommended protective gear when working with paints and other chemicals. You can also hire a local garage flooring pro with the experience and equipment needed to perform the installation safely with no lingering fumes or debris.

Other garage floor concrete sealers besides epoxy include solvent-based acrylic and polyacrylic sealers, quick-drying polymer or polyurethane sealers, and scratch-resistant polyurea floor coatings that are ideal for exterior applications. These sealants come in basic clear forms and more decorative options, varying in price accordingly.