How to Reseal My Concrete Floor


Concrete floors such as those in your home or garage look great when properly sealed. Sealing helps protect the floors, prolongs the life of the floor, repel stains and makes cleaning up spills easier. Film-forming sealers are most commonly used for decorative concrete work and for concrete inside a building or home. This type of sealer forms a protective film over the surface and makes the floor glossy. When resealing a concrete floor, make sure to use the same type of film-forming sealer.

Things You'll Need

  • Dust mop
  • Shop vac
  • 2 ounces of white vinegar
  • 1 gallon of water
  • Bucket
  • Sealer
  • Painting drip pan
  • Paint roller
  • Run the dust mop over the area in overlapping swipes until you have mopped the entire floor. Remove all dust and debris.

  • Vacuum the floor to ensure you pick up any fibers or dust.

  • Mix together 2 ounces white vinegar with 1 gallon of hot water in a bucket.

  • Scrub the floor with a mop to remove any sticky spots or unseen spills. Discard the water and rinse off the mop.

  • Rinse the floor with the mop and a bucket of plain water.

  • Vacuum any standing water; wait at least 24 hours.

  • Apply the sealer to the floor following the manufacturer's instructions. Typically, this requires you apply the sealer to the floor with a roller and a painting drip pan. Start in a far corner and work your way across the room, moving back and forth until you have sealed the entire room.

  • Wait for the sealant to dry according to the manufacturer's instructions, which normally is about two hours. Don't wait for longer than the manufacturer recommends or the sealant may harden too much and not bond properly.

  • Allow the sealant to cure over the next three to four days, or according to manufacturer's instructions.

Tips & Warnings

  • Buy the best you can afford. It's better to spend the money on a quality product than later repeat the sealing process.
  • Consider topping the sealer with a wax coating with at least 20-percent minimum solids to prolong the life of your sealer. Depending upon the amount of foot traffic to the area and whether or not you have pets, you may have to re-wax the area every three months or every year.
  • Never use harsh chemicals on the flooring such as ammonia, bleach, pine cleaner or self-cleaning mops. The chemicals may damage the seal.

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