How to Seal a Tile Patio

Sealing a tile patio is important to help it maintain its durability. To survive regular wear and tear from weather and heavy usage, the floor must be sealed properly and using appropriate products. Sealing outdoor tiled surfaces helps them to keep their color and prevents them from absorbing moisture.  Porous materials such as sandstone tiles require regular sealing before and after installation while non-porous materials generally only require sealing after installation. Follow the simple steps below to seal your own patio tile.

Tools and Materials

  • Tile and grout sealant
  • Grout
  • Grout float
  • Paint brush
  • Sponge
  • Rags
  • Broom

Step 1 – Prepare the Patio

Taking time to make the necessary preparations will help to ensure that the job is carried out smoothly. First, remove any pot plants or furniture from the patio and clear it thoroughly. Sweep away any dust and dirt. The surface needs to be as clean as possible for the sealant to be able to soak in and work as it should.

Step 2 – Apply the Sealant

For more specific details on how to use the sealant, refer to the manufacturer’s instructions on the packaging. Use an appropriate sealant specifically designed for using with the types of tiles used for your patio. For example, flagstone pavers require a different type of sealant than stamped concrete requires.

Using a paint brush, apply an even layer over the entire surface. Be sure that the sealant does not form pools in any depressions in the surface. Also, avoid having sealant dripping over the sides of the tiles into the gaps between. Remove any excess as you go. Leave the sealant to dry thoroughly, usually overnight.

Step 3 – Apply Grout

Be sure that the patio surface is completely dry before grouting the joints. Refer to the manufacturer’s instructions for more specific information on using the grout. Apply the grout in the joints between all of the tiles, filling them thoroughly. Use a grout float to apply the grout. Grout may also come with a grout gun which makes the job easier. Wipe away any excess from the surface of the tiles as you go. This is important otherwise it will set and be difficult to remove. When the surface is complete, do not use the patio for two days. This will allow the grout to set thoroughly.

Step 4 – Apply Another Layer of Sealant

When the grout is dry, apply another layer of sealant over the entire surface, this time including the grouted joints. This will create the final waterproof sealer, also preventing any moisture from getting into the grouted joints. Thoroughly cover the entire surface and then leave it to cure overnight. For further protection, it is recommended that you apply a second, final coat of sealant over the entire surface. Do not use the patio or place any garden furniture back on it until it is completely dry. If the tiles are tile is non-porous and not soaking up water, then you will only need one coat of sealant.