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How to Replace a Pool Tile (And Can It Be Done Underwater?)

  • meantimeback
  • Oct 28
  • 2 min read

Updated: Oct 28

Learn how to replace damaged pool tiles safely - from simple DIY repairs to professional underwater methods by Depth Works.



The Cracked Tile Problem


A single cracked or loose tile can spoil a pool’s appearance and allow water behind the surface, risking further damage. Many owners wonder if it’s possible to fix just one tile - and whether the pool must be drained.


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Can You Replace a Tile Without Draining the Pool?


Yes - in some situations.


  • Above-Waterline Repairs: When the damaged tile sits near the coping or skimmer, the area can often be drained locally and repaired.

  • Below-Water Repairs: Anything deeper requires specialist divers and two-part epoxy adhesives formulated for underwater bonding.


Attempting a deep-water fix without proper training risks poor adhesion and contamination.


Step-by-Step Guide for DIY Above-Water Repairs


  1. Remove the damaged tile with a chisel or oscillating tool.

  2. Clean the cavity thoroughly; remove all old mortar.

  3. Apply adhesive rated for submerged use.

  4. Seat the new tile and align flush with neighbours.

  5. Grout and cure following manufacturer instructions before refilling.


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    (Tip: always wear eye protection and switch off filtration equipment.)


DIY can work for isolated, cosmetic issues. For structural or underwater jobs, call a professional.


The Professional Underwater Method


Depth Works technicians use commercial-grade dive gear and underwater epoxies:


  • Preparation: Suction tools clear debris around the repair zone.

  • Adhesion: Divers apply a putty-like epoxy that cures underwater.

  • Finishing: Specialised trowels smooth the joint and replicate grout lines.


This method saves water, downtime, and disruption - ideal for commercial facilities or resorts.


Why Hire a Specialist


Professional repairs ensure:


  • Correct adhesive chemistry for longevity.

  • Safety compliance for confined-space or dive work.

  • Matching tiles and uniform finish.


Depth Works’ certified divers and tiling experts handle both emergency and scheduled maintenance Australia-wide.


Conclusion - Quick Fix or Long-Term Solution?


Replacing a single tile can look simple but achieving a watertight, lasting result underwater is anything but. For most owners, bringing in professionals is the most reliable option.


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