We provide specialized winterization services to safeguard your pool during the off-season, and when spring arrives, we handle the thorough opening process.
Recent Posts
We provide specialized winterization services to safeguard your pool during the off-season, and when spring arrives, we handle the thorough opening process.
Loose, cracked or missing swimming pool tiles can expose sharp edges, allow water behind the finish and lead to larger sections separating. Absolute Pools provides pool tile, grout and surface repairs across Cape Town and surrounding areas.
Swimming pool tiles are installed in an environment exposed to constant moisture, chemicals, temperature changes and movement between different construction materials. When the adhesive, grout or supporting surface begins failing, individual tiles may loosen before larger sections start falling away.
The problem commonly affects waterline tiles, pool steps, benches and tiled feature areas. Tiles may sound hollow, shift when touched or develop cracked grout around their edges before detaching completely.
Common causes include ageing adhesive, deteriorated grout, water entering behind the tiles, movement in the pool structure, poor previous installation and damage to the concrete or marbelite beneath them.
Replacing the visible missing tile alone may not provide a lasting repair. The surrounding tiles, substrate and source of the moisture or movement should be checked before the area is retiled.
Pool tiles often show warning signs before they fall away completely.
These may include:
Early repairs can prevent water from reaching a larger section of the substrate and loosening neighbouring tiles.
Pool tile adhesive gradually deteriorates through constant submersion, chemical exposure and normal ageing.
The adhesive may lose its grip on the tile or supporting surface. The tile can remain in place temporarily because of the surrounding grout before eventually becoming loose.
Older adhesive may fail across a complete strip rather than beneath one isolated tile. Removing only the visibly loose tile can leave neighbouring tiles attached to the same deteriorated material.
Grout seals the joints between tiles and helps protect the adhesive and substrate beneath them.
As grout cracks, erodes or falls out, water can enter behind the tiled surface. The adhesive remains continuously wet and may begin weakening.
Missing grout also allows dirt and algae to collect between tiles, making the waterline increasingly difficult to clean.
Failed grout should be repaired before larger sections begin separating.
Water can enter behind tiles through cracked grout, damaged sealant, loose coping or a crack in the pool structure.
Once trapped, the moisture can weaken the adhesive and supporting plaster. Movement and temperature changes may gradually push the tile away from the wall.
The cause of the water entry should be corrected before the area is retiled.
Movement in the concrete or gunite pool shell can crack the substrate beneath the tiles.
Several tiles may split or fall away along the same line. The grout can reopen repeatedly even after local repairs.
Structural movement may result from soil settlement, poor drainage, groundwater pressure, tree roots or changes around the property.
The underlying crack should be repaired before new tiles are installed.
Waterline tiles sit close to the coping and surrounding paving.
Loose coping, expanding paving or movement in the pool’s bond beam can place pressure on the tiled section. Cracks may develop along the top edge before the tiles become loose.
Tile and coping repairs may need to be completed together when the movement affects both areas.
Tiles may fail early when the supporting surface was not prepared properly.
Dust, loose plaster, old adhesive, algae and weak material can prevent the new adhesive from bonding securely. Unsuitable adhesive or inadequate coverage behind the tiles can also create hollow spaces.
A tile that has been pressed onto isolated adhesive spots instead of receiving consistent coverage may detach more easily.
Swimming pool tiles require an adhesive suitable for permanent immersion.
Ordinary wall or floor adhesive may soften, crack or separate when used underwater. The installation may appear secure initially and begin failing after repeated wetting and chemical exposure.
The replacement material should be compatible with the pool substrate, tile type and submerged environment.
Pool grout must tolerate continuous water exposure and pool chemicals.
Unsuitable grout can become soft, powdery or cracked. Water then reaches the adhesive beneath the tiles.
The correct grout should be installed into properly prepared joints rather than spread over loose or contaminated material.
Waterline tiles may be attached over marbelite, plaster or another cement-based layer.
When that supporting finish becomes hollow, the tile and substrate can detach together. The back of the fallen tile may still have adhesive and plaster attached to it.
All loose material should be removed until a secure surface is reached before retile work begins.
Cracks beneath tiled areas can transfer through the adhesive and grout.
Tiles may split, lift or separate as the two sides of the crack move. A rigid tile repair cannot remain secure over an active structural defect.
The crack should be opened and repaired using a method suited to the pool structure before the tiled finish is restored.
Very low pH can erode grout and cement-based adhesive.
The joints may become recessed, rough or powdery before the tiles loosen. Highly unstable water can also damage metal fittings and nearby pool surfaces.
High calcium and pH can create scale along the tiles and grout. Aggressive scale removal may damage already weakened joints.
Balanced pool water helps protect repaired tile areas but cannot restore adhesive that has already failed.
A drained pool is exposed to direct sunlight and temperature changes.
Tiles, grout and the pool shell can heat and expand differently. Existing weak areas may become more noticeable, especially during Cape Town’s hot summer conditions.
The pool should not remain empty longer than necessary during repairs. Groundwater and structural risks should also be considered before draining.
High-pressure cleaning can remove loose grout and force water behind weakened tiles.
Harsh scraping and unsuitable acids may also damage grout, tile surfaces and surrounding marbelite.
Cleaning methods should suit the pool finish and condition. Loose tiles require repair rather than increasingly aggressive cleaning.
Pool tiles can crack when struck by cleaning equipment, heavy objects or materials dropped during renovation work.
One damaged tile may remain an isolated repair. A row of cracked or loose tiles usually indicates a wider adhesive, substrate or movement problem.
Sharp broken pieces should be removed carefully to prevent swimmer injuries.
Replacement tiles can fall away when the old adhesive was not removed completely or the repair area remained wet and contaminated.
A small patch may also fail because the neighbouring tiles and substrate were already loose.
Previous repair material should be removed back to a secure surface before another tile is installed.
The waterline is the most common tiled area in many swimming pools.
These tiles sit between the permanently submerged surface and the exposed coping above. They experience changes in water level, evaporation, sunlight, cleaning and mineral deposits.
Cracked grout and loose coping can allow water behind the top of the tiled strip. Once several tiles loosen, the failure may spread along the waterline.
The complete affected section should be assessed rather than replacing missing tiles one at a time without checking the surrounding bond.
Small mosaic tiles rely on consistent adhesive coverage and sound grout joints.
Once the backing or adhesive begins failing, clusters of tiles may detach together. Individual pieces can also come loose gradually and collect on the pool floor.
Mosaic repairs require careful preparation because uneven adhesive thickness can leave the replacement section raised or recessed.
Matching the colour, size and finish of older tiles may be difficult when the original product is no longer available.
Tiled steps receive regular foot traffic and cleaning.
Movement, cracked grout and impact can loosen tiles along the tread and edges. The exposed area may contain sharp adhesive or broken tile pieces that scrape swimmers’ feet.
The step structure and adjoining tile sections should be checked for cracks or hollow areas before replacement tiles are fitted.
Built-in benches, ledges and shallow shelves contain several changes in direction.
These joints can concentrate stress when the pool shell moves. Water may also collect behind poorly sealed edges.
Loose tiles around benches can indicate a local installation problem or movement where the bench connects to the main pool structure.
The skimmer opening creates a transition between the pool structure, plastic or concrete skimmer body and tiled finish.
Movement and failed sealing around the skimmer throat can crack grout and loosen nearby tiles. The same joint may also allow water to escape behind the pool wall.
The skimmer connection and adjoining pipework should be checked when loose tiles occur together with water loss or wet paving.
Pool lights pass through the wall and require suitable sealing.
Movement, corrosion and failed seals can cause cracking or loose tiles around the light housing. Water may enter behind the tiled finish or inside the light fitting.
The electrical and structural condition should be assessed before the area is retiled. Electrical work should be completed safely by a qualified electrician where required.
Return fittings interrupt the tiled or plastered wall surface.
Movement or leaking connections can create cracks around the fitting and loosen nearby tiles. The return jet may also direct strong water flow towards already damaged grout.
The fitting, pipe connection and surrounding substrate should be checked before replacement tiles are installed.
Tiles or mosaics around a main drain can loosen when the fitting moves, the grout deteriorates or the substrate cracks.
The area remains constantly submerged and is difficult to inspect closely while the pool is filled.
A loose or damaged main drain fitting can also contribute to water loss. The drain and surrounding structure should be assessed together.
A tile that moves or sounds hollow has already lost part of its bond.
Leaving it in place can allow more water behind the surrounding installation. The tile may detach while the pool is being cleaned or used.
Loose tiles should be removed carefully so the condition of the adhesive and substrate can be assessed.
A group of tiles separating together usually indicates wider adhesive or substrate failure.
The problem may extend beyond the visible opening. Neighbouring tiles can remain attached only by grout while the adhesive behind them has already separated.
The repair area should continue until all loose tiles and weak material have been removed.
Repeated failure suggests that the underlying problem remains unresolved.
Possible causes include active structural movement, water behind the tiles, loose plaster, unsuitable adhesive or repairs completed over damp and contaminated surfaces.
Adding another tile to the same weak area is unlikely to provide a lasting result.
The full affected section should be opened, repaired and retiled properly.
Cracked grout often appears before tiles become loose.
The cracks allow water to enter behind the finish and may indicate movement beneath the installation. Regrouting alone may fail when the tiles or substrate are already hollow.
The repair should include the grout, adhesive and supporting surface where necessary.
Tile failure can occur together with wider marbelite deterioration.
The marbelite beneath or next to the tiles may sound hollow, release flakes or expose aggregate. Retiling over the loose finish will not create a secure bond.
The damaged marbelite should be removed and repaired before the tiles are reinstated.
When deterioration affects much of the pool, resurfacing may be more practical than isolated repairs.
Loose tiles do not automatically mean the pool is leaking.
The tile and grout are finishes rather than the main structural waterproof barrier in many concrete and gunite pools. However, cracks, damaged fittings and failed skimmer connections behind the tiled area can allow water to escape.
Leak detection may be needed to determine whether the loose tiles are connected to the water loss or whether a separate pipe fault exists.
Persistent wet paving near loose waterline tiles may indicate a leaking skimmer, structural crack, pipe connection or failed joint near the top of the pool wall.
Water can move beneath paving before appearing at the surface. The damp area may therefore sit away from the actual source.
The leak should be located before the tiles and paving are repaired.
Loose coping can move independently from the pool wall and place pressure on the waterline tiles below it.
Cracks may form along the top grout joint, and complete sections of tile can become detached.
The coping bed, pool bond beam and surrounding paving should be checked before only the tiles are replaced.
Tiles loosening soon after resurfacing can indicate poor preparation or disturbance during the resurfacing work.
The new finish may have been applied against loose tiles, or the tile joints may not have been repaired properly beforehand.
The failure should be assessed promptly before water reaches a larger section of the newly finished pool.
Acid can weaken old grout and expose already loose tile edges.
The tiles may appear secure before cleaning and begin detaching afterwards because the grout was providing much of the remaining support.
Acid washing should not be used on a pool with hollow tiles and deteriorated joints without first assessing the condition of the installation.
Draining can expose loose tiles to heat and drying.
Cape Town’s summer sun can cause rapid temperature changes along the pool wall and coping. Existing weak adhesive and grout may crack or release.
Repair work should be organised so the pool does not remain empty unnecessarily.
Heavy rain can expose poor drainage and failed joints around coping and paving.
Water may enter from above and travel behind waterline tiles. Saturated soil and groundwater can also contribute to movement in the pool structure.
Loose tiles following wet weather should be assessed together with the surrounding paving, coping and drainage.
Long dry periods can cause movement in certain soils and surrounding paving.
Coping and the upper pool wall may shift slightly, creating cracks along the waterline tile band.
The seasonal pattern and condition of nearby paving can help identify whether movement is contributing to the failure.
A loose tile should not simply be pressed back into its old adhesive.
The tile, damaged adhesive and weak substrate must be removed and cleaned. The supporting surface should be repaired and allowed to reach a suitable condition before new adhesive is applied.
An undamaged tile may sometimes be reused when it can be cleaned properly and matches the existing installation. Replacement is more practical when the tile is cracked, stained or damaged.
Some small waterline repairs can be completed after lowering the water below the affected section.
Underwater repair products exist, but they may not provide the same preparation and access as a properly exposed, dry repair area.
Larger failures, loose substrate and structural cracks usually require more extensive access. The decision depends on the location, depth and condition of the damaged section.
Swimming should be limited when broken tiles, sharp adhesive or exposed concrete create cutting hazards.
Small loose pieces can remain on the pool floor and injure swimmers. Damaged steps and shallow ledges are particularly concerning because people place their feet and hands on them.
The pool should also remain unused when the water is cloudy and the damaged area cannot be seen clearly.
Broken tile pieces can enter an automatic cleaner and block its internal mechanism.
Sharp edges can damage hoses, diaphragms, wheels and footpads. Loose mosaics may also be drawn into the skimmer and pump basket.
The pool floor should be checked and damaged pieces removed while repairs are arranged.
Local repairs may be suitable when only a few tiles are loose and the surrounding substrate remains solid.
The affected tiles and damaged adhesive are removed, and the supporting surface is prepared before matching tiles are fitted and grouted.
A perfect match may not be possible when the existing tiles are old or discontinued.
The repair area should extend beyond the visible gap when neighbouring tiles are also hollow.
A complete waterline retile may be more practical when tiles are failing across several sections.
Other signs include widespread hollow sounds, deteriorated grout, several unmatched previous repairs and movement along the coping.
Removing the complete tile band allows the substrate to be repaired consistently and gives the pool a more uniform appearance.
Structural cracks and skimmer faults should be corrected before the new tiles are installed.
Resurfacing may be considered when loose tiles occur alongside widespread marbelite peeling, cracks, roughness and several failed surface repairs.
The loose tiles and damaged finish are removed, structural and substrate repairs are completed and the pool receives a consistent new surface.
Resurfacing alone should not cover active movement or leaking fittings.
Absolute Pools checks the number, location and pattern of loose or missing tiles.
The surrounding tiles are assessed for hollow sounds, cracked grout and movement. The supporting plaster, marbelite, concrete or gunite substrate is checked where the tiles have already fallen away.
Nearby coping, skimmers, fittings, cracks and paving are inspected when water entry or structural movement may be contributing.
Water loss and wet ground are considered where leak detection may be required before tile repairs begin.
The assessment determines whether the pool needs a local repair, larger retile section, structural repair or resurfacing.
The repair begins with removing all loose tiles, failed grout, deteriorated adhesive and weak substrate.
Cracks, hollow plaster and damaged fittings are repaired before the tiled surface is restored. Suitable submerged adhesive and grout are then used to fit the replacement tiles.
The tile alignment, spacing and waterline are maintained as consistently as possible. Older tiles may require a complementary replacement when an exact match cannot be sourced.
The repaired area is allowed to cure correctly before the pool is returned to normal use.
Waterline retiling restores a pool where the existing tile band has become loose, dated or extensively damaged.
The old tiles and failed material are removed. The upper pool wall is checked for cracks, hollow areas and movement around the skimmer and coping.
The substrate is rebuilt and prepared before the new tile band is installed, grouted and sealed appropriately.
Related coping and resurfacing work can be coordinated at the same time to avoid damaging the new tiles later.
Underlying faults should be repaired before new tiles are installed.
These may include:
A secure tile installation depends on a stable and properly prepared substrate.
Maintain balanced pool water to protect grout, adhesive and cement-based surfaces.
Repair cracked grout before it allows water behind the tiles. Address loose coping, wet paving and structural cracks before movement spreads across the tile band.
Avoid aggressive pressure washing and repeated acid treatment on ageing grout. Inspect hollow or moving tiles before they detach completely.
When retile work is needed, use materials suitable for permanent submersion and prepare the supporting surface thoroughly.
Absolute Pools repairs loose, missing and falling swimming pool tiles across Cape Town and surrounding areas, including the Northern Suburbs, Southern Suburbs, Atlantic Seaboard, Cape Town City Bowl, West Coast suburbs and Helderberg.
Service areas include Durbanville, Bellville, Brackenfell, Kraaifontein, Parow, Goodwood, Milnerton, Table View, Parklands, Blouberg, Century City, Pinelands, Rondebosch, Claremont, Newlands, Constantia, Tokai, Wynberg, Plumstead, Hout Bay, Sea Point, Green Point, Camps Bay, Somerset West, Strand, Gordon’s Bay, Stellenbosch, Paarl and surrounding areas.
Absolute Pools checks the tiles, grout, adhesive, substrate, coping and nearby fittings before recommending repairs.
We assist with local pool tile repairs, waterline retiling, grout repairs, skimmer repairs, coping repairs, crack repairs and pool resurfacing.
Our focus is on repairing the cause of the tile failure and rebuilding a secure base rather than replacing visible tiles over loose or damaged material.
Loose and missing pool tiles can expose sharp edges, allow water behind the finish and lead to larger sections failing.
Contact Absolute Pools for pool tile inspections, repairs and waterline retiling across Cape Town and surrounding areas.