How to repair broken pool tiles

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Introduction

Noticing cracked or missing tiles around your pool? While they may seem cosmetic at first, broken pool tiles can lead to water damage, safety hazards, and structural issues if left unrepaired. In this guide, you’ll learn how to repair broken pool tiles step-by-step, whether it’s a loose waterline tile or a cracked piece on the pool floor. With a few tools and a little time, you can restore your pool’s appearance and integrity like a pro.

Why Repairing Broken Pool Tiles Matters

Pool tiles aren’t just decorative—they serve important structural and functional purposes. When tiles crack, chip, or fall off, they expose underlying surfaces to water damage and can create sharp edges that pose a safety risk.

Here’s why timely repairs are important:

  • Prevents water infiltration behind the tile
  • Stops damage from spreading to surrounding tiles or pool shell
  • Maintains the aesthetic appeal of your pool
  • Reduces long-term repair costs
  • Eliminates safety hazards from sharp or loose edges

Whether your pool uses ceramic, porcelain, or glass tiles, minor damage is usually a DIY fix if caught early.

Step-by-Step Guide to Repair Broken Pool Tiles

Step 1: Gather Your Materials

Before starting the repair, gather the necessary tools and materials:

  • Replacement pool tiles (match size and color)
  • Waterproof pool tile adhesive or thin-set mortar
  • Waterproof grout (pool-rated)
  • Grout float or rubber trowel
  • Notched trowel or putty knife
  • Small chisel or flathead screwdriver
  • Hammer or mallet
  • Sponge and bucket of water
  • Tile spacers (optional)
  • Safety gloves and goggles

💡 Tip: If you don’t have spare tiles, bring a sample to a pool supply or tile store for a match.

Step 2: Remove the Broken Tile

Use a small chisel or flathead screwdriver and gently tap with a hammer to break apart the damaged tile. Work slowly to avoid damaging neighboring tiles.

  • Pry out all loose pieces.
  • Remove any old adhesive or grout left behind on the surface.

⚠️ Caution: Wear gloves and goggles to protect against sharp shards.

Step 3: Clean the Area Thoroughly

Once the broken tile is removed:

  • Use a wire brush or scraper to remove debris and old mortar.
  • Wipe down the surface with a damp cloth or sponge.
  • Let the area dry completely before continuing.

A clean, dry surface ensures strong adhesion for the new tile.

Step 4: Apply the Tile Adhesive

Use a pool-safe tile adhesive or waterproof thin-set mortar.

  • Apply a small amount to the cleaned surface using a notched trowel or putty knife.
  • Spread evenly and create ridges for better grip.

💡 Tip: Follow manufacturer instructions for open time (how long the adhesive remains workable).

Step 5: Set the New Tile in Place

Press the replacement tile firmly into the adhesive.

  • Wiggle slightly to seat it securely.
  • Use tile spacers if needed to maintain even spacing with surrounding tiles.
  • Wipe off any excess adhesive around the edges.

Allow the adhesive to cure for at least 24 hours before grouting.

🧱 Tip: Use painter’s tape over the tile face to hold it in place if it’s on a vertical surface.

Step 6: Grout the Tile

Once the adhesive has fully set:

  • Mix the waterproof grout according to instructions.
  • Use a grout float to press grout into the spaces around the tile.
  • Hold the float at a 45° angle and remove excess as you go.

After 10–15 minutes:

  • Wipe the area with a damp sponge to remove grout haze.
  • Rinse the sponge frequently to keep the surface clean.

💡 Tip: Allow the grout to cure for at least 24–48 hours before exposing it to water.

Step 7: Seal the Grout (Optional but Recommended)

For added protection, apply a pool-grade grout sealer once the grout is fully cured.

  • Use a small brush or applicator to apply.
  • Let dry according to product instructions.

Sealing helps protect the grout from staining, cracking, and premature deterioration.

Common Mistakes to Avoid

1. Using Indoor Tile Adhesive

Regular adhesives can’t withstand water pressure or pool chemicals.

✅ Always use waterproof, pool-rated adhesive and grout.

2. Not Removing Old Mortar

Leaving behind old adhesive weakens the bond of the new tile.

✅ Scrape the surface clean for maximum adhesion.

3. Rushing the Drying Process

Swimming or filling the pool before the materials cure leads to failed repairs.

✅ Wait at least 24–48 hours after grouting before refilling or using the pool.

4. Mismatched Tiles

Using a tile that doesn’t match in size or color can stand out badly.

✅ Bring a sample to the store and buy a few extras for future repairs.

5. Skipping Grout Sealing

Unsealed grout deteriorates quickly in chlorinated water.

✅ Seal grout if possible to extend its lifespan.

Extra Tips & Pool Hacks

  • Keep spare tiles on hand for quick repairs in the future.
  • Mark the repair date somewhere on your pool log to track tile aging.
  • Use a clear underwater epoxy for small emergency repairs if swimming can’t be delayed.
  • Inspect the waterline tiles monthly—early detection saves time and money.

🧼 Related Tip: [Learn how to seal a leaking pool skimmer] if water loss is also an issue near the tile area.

Conclusion

Broken pool tiles don’t just affect your pool’s appearance—they can lead to deeper problems if ignored. By following this step-by-step repair guide, you can replace damaged tiles safely and effectively, keeping your pool in top shape. Whether it’s one tile or several, the process is simple and rewarding with the right materials and patience.

👉 Bookmark this guide for your next tile repair project and keep your pool looking pristine all season!