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Care and Repair

How to Seal a Concrete Patio

Key takeaways

  • Clean the slab before sealing
  • Wait for the surface to be completely dry
  • Apply thin, even coats
  • Reseal every couple of years

A sealer is the easiest way to protect a patio.

When to seal

New concrete usually waits a few weeks before sealing. Existing concrete can be sealed whenever it is clean and dry.

Prep matters

Sweep and wash off dirt, oil and mildew. Let the slab dry fully, because trapped moisture can make a sealer look cloudy.

Applying

Use a roller or sprayer for thin, even coats and avoid puddles. Watch the weather, since sealer needs dry conditions to cure.

Upkeep

Plan to reseal every couple of years, more often in strong sun or on busy surfaces.

Related

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