How to Seal Your Concrete Paver Patio

Patios are the workhorses of the backyard, but without a protective barrier, concrete pavers are porous sponges for oil, grease, and the relentless creep of moss. Sealing your pavers is not just about achieving a high-gloss finish; it is about filling those microscopic voids to prevent stains from sinking deep into the material where they become permanent residents. Done well, a sealed patio maintains its original color for years and makes maintenance as simple as a quick spray from the garden hose. The secret lies in the preparation, specifically ensuring the pavers are bone-dry and clear of debris. If you trap moisture under a sealer, you will end up with a cloudy, hazy finish that ruins the aesthetic of your hardscape.

  1. Blast Away Years of Grime. Clear away all furniture and debris, then scrub the surface with a concrete cleaner and a stiff-bristle brush. Power wash the patio on a low-pressure setting to remove deep-seated dirt, paying extra attention to the joints between pavers.
  2. Clear the Joints Clean. Inspect the joints for any weeds, grass, or moss that survived the wash. Use a flat-head screwdriver or a dedicated joint tool to scrape out stubborn roots, then rinse those areas again.
  3. Patience Prevents Cloudy Finish. Wait at least 24 to 48 hours for the pavers and the sand in the joints to dry completely. Sealing wet sand will lock in moisture and create white, milky patches.
  4. Spray and Roll Evenly. Pour the sealer into a pump sprayer and apply it in thin, even strokes, starting from one corner and moving across the patio. Follow behind with a medium-nap roller to soak up excess sealer and prevent pooling in the joints.
  5. Lock In Complete Coverage. Wait for the first coat to dry until it is tacky but no longer wet to the touch, usually 30 to 60 minutes. Apply the second coat in a perpendicular direction to the first to ensure total coverage.
  6. Keep Everyone Off for 48 Hours. Keep all foot traffic off the patio for at least 24 hours and avoid putting furniture back for at least 48 hours. Let the sealer cure fully before exposing it to heavy rain or spills.