How to Seal Outdoor Stone Pavers

Cleaning stone pavers is necessary before sealing.

A creative way to lend originality and style to patios and garden walkways is by installing stone pavers. The variety of stones available allows numerous choices in color and texture. Sealing these outdoor pavers is an important part of preserving the integrity of the stone. Adding a quality sealant is also the perfect way to bring out the natural color of the pavers. The stones will need to be sealed every three or four years, but the stunning results will make the extra step worth the effort.

Things You'll Need

• Safety glasses
• Garden hose with spray nozzle
• Dish soap
• Broom
• Nylon brush
• Stone sealant
• Paint pan
• Paintbrush
• Paint roller

Instructions

Cleaning Stone Pavers

1. Shower each stone paver with clear water. Use a garden hose with a spray nozzle.

2. Mix 1/4 cup of dish soap with a gallon of water. Pour it over the pavers and scrub, using a stiff broom or nylon brush.

3. Rinse, using the garden hose, and let the stones air dry. Any remaining stains will have to removed using products that are specifically designed to clean the particular type of stone at hand. Follow label directions for use, and rinse thoroughly.

Sealing Stone Pavers

1. Shake the can of stone sealant vigorously, and pour the sealant into a paint pan. Apply a layer to the stone pavers using a paintbrush or roller. Let the sealant dry for two hours.

2. Add a second layer by brushing or rolling it onto the stones. Repeated applications of thin layers provide a smoother finish.

3. Run your fingers along the pavers to make sure the surface has dried, but wait a full 48 hours before using the stones.

Tips & Warnings

• Sealing stone pavers will reduce incidences of efflorescence and improve the looks of your patio or walkway. According to the U.S. General Services Administration, "Efflorescence is a condition where white (salt) deposits form on the surface of the masonry. The formation of salts is usually a sign of excessive amounts of moisture in the masonry."

• It's important to make sure you are using the correct sealant for the type of stone paver installed. Paver Search states, "Before applying any type of sealer to any new or existing paved areas, it is recommended that you always consult the advice of the manufacturers on the right type of sealer for your project!!"

• Use safety glasses when cleaning and sealing stone pavers.

• Give the stones plenty of time to dry before sealing, or the sealant will not soak into the stone. The surface will then start flaking.

References

• Paver Search: Pavers Sealing Procedures
• U.S. General Services Administration: Removing Efflorescence

Resources

• The Family Handyman: How to Build a Stone Path