Finding a swimming pool leak

Finding a leak in a swimming pool.leaking swimming pool

The major concerns are the leaks could potentially be undermining the pool foundations and possibly any nearby buildings. Early leak detection and intervention is needed to prevent this happening.

So detecting & repairing the swimming pool as soon as possible will save on further potential problems along the way.

The other concerns is the cost of losing so much water, pool chemicals and the waste of heating the swimming pool water.Liner pool leaking

So if you suspect your swimming pool is leaking there are a number of steps you could take below…

These step by step approaches below will eliminate some of the suspects in finding where the pool is losing water from.

Take a close look for any holes or tears in the liner fabric.

If it’s a concrete pool, look for tiles or mosaics that have come loose off the wall in places.

Leaking concrete pool
Leaking concrete pool

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 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 all over the sides of the steps.

Locating a leak on a skimmer
Locating a leak on a skimmer

Sometimes pool skimmers crack due to poor maintenance, frost damage or general old age and deterioration.

The 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, this is best left to an expert to determine if there a leak around these fittings.

In concrete pools, it is often either a breakdown of materials of poor workmanship that causes the leak, i.e.  Not sealing around the inlets, the skimmers and main drains correctly. Check around hand rails as well.

Inspect around the filter, pool pump, valves, multi-ports, and filter lid, pipes, and the connections.

Pool filter leaking
Water accumulating around the bottom of a pool filter

Sometimes a gasket fails leading to water leaking from the connection.

Look over the heat ex changers, and pool heater these can corroded.

For other clues check underneath the 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.

Shotcrete and Gunite pools are notorious for leaks.

If constructed incorrectly the structure will eventually breakdown and become nothing more than soggy paper cup.

This is because the water has seeped through the finished lining, be it tile or render and has aggravated the matrix of the concrete breaking down 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 section of the pool  and there may be unseen underlying problem with the construction itself.

Swimming pool leaking
Checking a swimming pool for leaks

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 in locating and finding leaks plus more info contact John. Covering most areas Gloucester Oxfordshire Bath Bristol Hereford Cardiff

01600 861 851

0789 2208 3001.

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