How to Seal Stamped Concrete Patios

Stamped concrete patios can represent a sizable investment for a property owner. You need to keep them in tip-top condition to maintain the looks and your investment.

You Will Need

  • Garden hose or pressure washer
  • Broom
  • Paint roller with extension handle
  • Concrete sealer
  • Concrete repair in a tube
  • Stain

Step 1: Prepare the Area

Before you seal a stamped concrete patio it should be totally clean and free of stains and debris. Remove all of your patio furniture, grill and anything else that is on the patio. Sweep the area well. Inspect the patio for stains or damage to the concrete. If you find stains, you may want to pressure wash the entire patio before you apply sealer. If you use your grill a lot you may have grease stains that you may not be able to see if the patio is stained or there is sealer on it already. Take extra care to clean around the area where the grill sat and also any areas where you ate. If you have pets, check for pet stains and odors and scrub those away also. Allow the patio to dry for at least 24 hours after washing it.

Check for chips in the concrete. These can be repaired with concrete in a tube and stained to match the rest of the patio. Do this before sealing the patio. Be sure the new cement is set and completely dry before you seal it. If you find a large damaged area, it may be best to let a professional repair it and match the rest of the stamping.

Step 2: Sealing

It is best if you can seal your stamped concrete patio when its in the shade, and on a day when the temperature is about 55 degrees. Be sure to not seal it if there has been rain or you have watered the lawn. You can seal wetness in and this can cause the concrete to disintegrate from the inside out.

There are many types of concrete sealant on the market, both water and oil based. While the oil-based sealer is usually a stronger seal, it is also not as environmentally friendly as a water-based product. A water-based product is also easier to use as it cleans up with water.

Purchase a paint roller cover that is labeled for texture as these have a denser loft and can get in cracks and grooves. Put this cover on the roller and screw in the extension handle.

Pour a puddle of sealer onto the stamped concrete and use the roller to smooth it out. The first few strokes, the roller cover will soak up a lot of the sealer so you will have to pour a second puddle right away. Be sure to roll it on in an even motion and make a smooth, even coat. Don't allow the sealer to puddle in crevices in the stamping pattern as these may not dry completely. Allow the sealer to dry per manufacturers instructions and then apply a second coat if needed. If the patio has never been coated or if it has been more than one year since it was coated, a second coat will be necessary.