How to Apply a Stone Sealer Impregnator to a Stone Countertop

Frederick M Hueston  StoneForensics.com

Applying a stone sealer impregnator to a stone countertop can help protect the surface from stains, moisture, and damage, while enhancing its natural beauty. Follow these detailed steps to ensure proper application:

Materials Needed

• Stone sealer impregnator
• Clean, lint-free cloths or applicator pads
• Painter’s tape
• Plastic sheeting (optional)
• Mild dish soap
• Water
• Sponge
• Soft-bristle brush (optional)
• Safety gloves
• Safety goggles
• Ventilation mask (if indoors)
• Paper towels or rags

Preparation

1. Clean the Countertop:
   • Mix a few drops of mild dish soap with warm water.
   • Use a sponge to thoroughly clean the stone surface, removing any dirt, grease, or residues.
   • For stubborn stains, gently scrub with a soft-bristle brush.
   • Rinse with clean water and dry with a lint-free cloth.
2. Protect Surrounding Areas:
   • Use painter’s tape to mask off any areas adjacent to the stone countertop (e.g., walls, sink edges).
   • If needed, cover surrounding surfaces with plastic sheeting to protect them from the sealer.
3. Ensure Proper Ventilation:
   • If working indoors, open windows and doors to ensure good ventilation.
   • Use a ventilation mask to avoid inhaling fumes.

Application

1. Read the Manufacturer’s Instructions:
   • Carefully read the stone sealer impregnator’s instructions on the product label. Different products may have specific application methods and drying times.
2. Apply the Sealer:
   • Wear safety gloves and goggles.
   • Pour a small amount of sealer onto a clean, lint-free cloth or applicator pad.
   • Working in small sections, apply the sealer to the countertop in a thin, even layer. Use a back-and-forth or circular motion to ensure even coverage.
   • Follow the manufacturer’s instructions regarding the amount of sealer to use and the waiting time before the next step.
3. Allow the Sealer to Penetrate:
   • Let the sealer penetrate the stone surface for the time specified by the manufacturer, typically 10-15 minutes. Avoid letting the sealer dry on the surface.
4. Wipe Off Excess Sealer:
   • After the penetration time, use a clean, dry cloth to wipe off any excess sealer.
   • Buff the surface to a shine, ensuring no streaks or residue are left behind.
5. Repeat if Necessary:
   • Depending on the porosity of the stone and the manufacturer’s instructions, a second or third coat may be needed.
   • If additional coats are required, repeat the application process, allowing appropriate drying time between coats.

Post-Application

1. Drying Time:
   • Allow the sealer to cure according to the manufacturer’s instructions. This can range from a few hours to 24 hours.
   • Avoid using the countertop during this curing period.
2. Final Cleaning:
   • Once the sealer has fully cured, give the countertop a final wipe with a clean, damp cloth to remove any residue.
3. Regular Maintenance:
   • Clean the sealed countertop regularly with a pH-neutral stone cleaner or a mild dish soap solution.
   • Reapply the sealer as recommended by the manufacturer, typically every 6-12 months, depending on the level of use and type of stone.

By following these steps, you can effectively apply a stone sealer impregnator to your stone countertop, ensuring it remains protected and looking beautiful for years to come.