Swimming pool tiles do not always remain attached to the screed or swimming pool tank. They can become de-bonded for any number of reasons. Once one tile is affected, the adjacent tiles will also be vulnerable to becoming unstuck.

Popped tiles can effect large areas

Tiles popping off

When tiles become unstuck voids form behind the tiles leaving only the grout joints to hold them together. Pool expansion and contraction due to pressure and temperature changes will cause the tiles to expand. If this movement is excessive the tiles can pop off.

Voids beneath tiles are dangerous because if the tiles fail completely, and pop off, they can present a serious cutting hazard to swimming pool users. In this case there is the added risk that the swimming pool will need to be closed, resulting in lost revenue, disgruntled patrons and a bad reputation.

However, the worst thing you can do if you have areas of tiles with voids is to drain your swimming pool as this will make the problem worse and could cause all the areas of tiles with voids to pop off.

Hollow tiles often develop unnoticed and are a potentially large problem waiting to happen.
Although the voids cannot be seen they can be found by specialist divers. Tap testing involves a diver inspecting every single tile in your swimming pool.

Once hollow sections are located the tiles can be removed and replaced to form a completely solid repair. This work can be done whilst keeping the pool open and without the need to drain the pool.

Commercial & Specialised Diving have trained underwater swimming pool technicians to identify voids behind tiles. They can also carry out repairs required to rectify the problem.

Commercial & specialised Diving are experts at repairing swimming pools nationwide. Contact our friendly advisor team to find out more on +60122558899 or


When things go wrong in your swimming pool it can seem like emptying it is the logical thing to do in order to conduct repairs.

However this is exactly the wrong thing to do!
When a swimming pool is full of water the concrete tank is stable. However, by draining it several things can happen that will de-stabilise the structural integrity of the tank and this can lead to further problems.

Blown tiles lores
Tiles can fracture to leave razor sharp edges, creating a severe health and safety risk
There are several considerations to take into account when you drain your swimming pool:

Cost of water disposal
Draining the pool is costly as the water needs to be disposed of responsibly. It can’t be emptied into the nearest storm drain! Pumping a swimming pool dry is an expensive exercise and can require a permit to dispose of the water.

Water in the swimming pool has a weight that pushes down on the swimming pool tank. If the surrounding water table is high and the water removed from the pool, you could end up with your swimming pool breaking free to float like a boat. This will result in your pool breaking itself apart.

Drying Out
If a pool is emptied the tiles and grout will dry out. This can result in the tile adhesive shrinking which can lead to the tiles de-bonding.

If a pool is drained it will be subject to temperature change. This will affect the tile sizes as they will grow larger when warm and shrink when cold. This can cause the tiles to de-bond.

Loss of revenue
When a swimming pool is drained it cannot earn any revenue. This can result in your customers going elsewhere to swim, and they may not come back.  By keeping your pool full of water it can remain in use and you can retain your customer loyalty.

Refilling an empty pool must be done carefully. The re-introduction of water will rehydrate the grout and adhesive, making it expand. This can cause tiles to de-bond.  The temperature will initially be cold as the water is put back in. This must be heated slowly to prevent tiles expanding too quickly and becoming de-bonded. The weight of water going back into the pool will put pressure on the tank that may cause movement. This can introduce cracks.

Slice lores
Tiles can de-bond in large numbers if you drain your swimming pool

In summary it is not a good idea to empty your swimming pool as it may introduce further problems.

However, if you do need your swimming pool repaired then we can help. our team of skilled underwater swimming pool repair technicians can do everything from replacing a single mosaic tile, re-grout an entire swimming pool, tile walls and replace grilles.

All of this work can be done without draining your swimming pool and at a time to suit you so you do not have to shut your pool. This ensures minimal disruption to you customers to maintain your customer loyalty.