How to Re-grout and Reseal Ceramic Tile


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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