How to Re-grout and Reseal Ceramic Tile

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Is the grout on your tile floor, countertop or backsplash badly stained, cracked or missing altogether? You can have it looking like new in no time.

Things You'll Need

  • Brushes
  • Grout Sealer
  • Sponges
  • Tile Grout
  • Vacuums
  • Utility Knife Or Awl
  • Awl
  • Buy a grout to match the existing grout color along with grout sealer. You'll find the best selection of colors at home centers, lumberyards or tile-supply stores. Some come premixed, but with most you just follow the manufacturer's mixing instructions. Choose a mildew-resistant grout.

  • Pry out old grout with a utility knife. Work carefully to avoid chipping or dislodging tiles, and wear safety goggles; grout can pop loose.

  • Vacuum or brush dust and dirt from grout lines (also known as joints). The grout lines can be dressed up even more with a cleaner if need be.

  • Mix your grout according to the manufacturer's instructions and work it into joints with a grout float, or if you are only repairing a small area, use your finger.

  • Wipe excess grout from the joint with a damp sponge, smoothing the grout to match existing joints.

  • Clean any grout from the tops of the tiles with the sponge.

  • Rinse your sponge often to speed the cleaning process.

  • Allow the grout to dry (this usually takes several hours at least, but overnight may be best). Follow the manufacturer's instructions.

  • Brush grout sealer onto the new dry grout. Sealing grout prevents it from absorbing water.

Tips & Warnings

  • If grout lines have cracked in wet areas, water may have seeped through to the drywall or to the substrate below.

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