Get matched with top epoxy flooring pros in Walnut, IA

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.

Depending on the finish and area size, costs range from $3 to $10 per square foot. Decorative finishes increase costs.

Epoxy and polyurethane sealers can last five to 10 years, while acrylic sealers last two to three years or more depending on the use, wear of the surface, and type of sealer you choose. Areas that see heavy traffic or extreme ice and snow may require more frequent sealing. Test your concrete every two years to gauge how it responds to absorbing water or if it fully repels it for longer than 20 seconds.

You can paint concrete with paint rollers. In fact, using paint rollers is considered one of the easiest ways to evenly apply paint on concrete. A paint roller with a 1/2- to 3/4-inch-thick nap—which is basically a fabric paint roller cover—is best for painting concrete. The thicker the nap, the more paint it can hold to fill those pesky concrete cracks and crevices.