Finding a leak in a simming pool is easy said that done!
Please excuse the cliche but It’s almost like looking for a needle in a haystack.
One or two major concerns about leaks on swimming pools are that water leaking from a swimming pool could potentially be undermining the foundations of the pool walls and possibly any nearby buildings. Early leak detection and intervention is needed to prevent the posisbility of this happening.
Detecting and then repairing the swimming pool as soon as possible will save on further potential problems further along the way.
The other concerns are the cost of losing so much water, pool chemicals and the waste of heating the swimming pool water. So if you suspect your swimming pool is leaking there are a number of steps you could take below…
- Take a close look for holes or a tear in the liner if it’s a concrete pool look for tiles that have blown off.
- Can you see any cracks in the pool walls or floor? A crack in the rendering could potentially be where the water is leaking from and further investigation may be needed to determine the extent of possible damage to the swimming pools shell
- Look carefully at your roman end or pool steps, there may be slight cracks on the treads or the rises so have a good look over the sides of the steps.
- Sometimes pool skimmers crack due to poor maintenance or old age and deterioration.
- Outlets (Returns and main drains) and underwater lights are obviously more difficult to get at to check for leaks, so unless you know what to do, it is best left to a swimming pool expert to determine if there a leak around these fittings.
- With concrete pools it is often either a breakdown of materials of poor workmanship that causes the leak, not properly sealing around the inlets, skimmers and main drains on concrete pools.
- Check around hand rails as well.
- Inspect around the filter, pool pump, valves, multi-port s, and filter lid, pipes, & connections.
- Look at the heat exchangers, and pool heater. These can corroded and for other clues check underneath for fittings for wetness look for puddles of water.
- If we are fortunate to have weeks of hot weather or you have an indoor pool use the bucket test.
Leaking concrete pools
This type of pool is the worst for leaking. Shotcrete and Gunite or pools are notorious for leaks. Constructed the wrong way the structure will eventually breakdown become nothing more than soggy paper cup, primarily because the water has seeped through the finished lining be it tile or render and has aggravated the matrix of the concrete breaking the bonds that hold the shell together.
Concrete swimming pools are built with reinforced concrete walls and flooring, several coats of waterproof render covering the shell, followed by tile-bands and marble type render finish, or covered with mosaics or tiles which are fixed on with waterproof adhesive and grouted. The plumbing system is installed during the construction process and that is the finished product.
When a concrete pool “shell begins to leak, it’s usually in more than one place and there may be underlying problem with the construction itself.
Patching and re-rendering the pool is not always a good idea and you may be throwing good money away. The only answer apart from fibre glassing the pool is to line the shell with a heavy duty 1.5mm thick vinyl liner with a felt underlay. These types of liners have 10 year guarantee
For help and more info contact John on 01600 861 851/0789 2208 3001