Liner Swimming Pool Leaks And Repairs

The swimming pool is leaking! Is it the liner loosing water or is it the pump, filter or pool fittings?

leaking liner poolThis pool liner is old and lost its vibrant colouring. Some of the coping stones were loose. but all were taken up and relayed with a new liner-lock track fitted before the pool liner replacement

Finding the  leak (or leaks) can be in the pipework, pump, filter heater too holes or tears in the lining

The liner.

Possible causes of a leaking liner pool are:

  1. Old age, general wear and tear, pinholes.
  2. Accidental damage
  3. Sharp objects that have fallen  into the pool.
  4. Vandalism.

    Liner pool leaking
    Liner pool is in the process of being drained and then the old vinyl liner removed.
  5. Youngster pole vaulting.
  6. An animal has strayed and fell in.

Replace the pool liner.


  1. Skimmer has cracked.
  2. Pool return gaskets deteriorated.
  3. Main drain gasket has failed.
  4. Underwater light leaking through cracked niche or hockey stick (cable conduit).
    Cracks in niche letting water escape and gasket failure
    There were cracks in this niche (behind the light) letting water escape and possible gasket and face-plate failure.

    Replacement underwater pool niche and light
    Replacement underwater niche and light with new conduit connected to the junction deck box.
The circulation system (Pipework, valves).
Pool plumbing
Swimming pools pipework and filter checked for leaks.

Possible causes of leaking pipework.

  1. Poor workmanship, not jointed or connected correctly.
  2. Frost damage leading to cracked pipes and valves
  3. Ground movement leading to the underground pipework splitting or disjointing.
  4. Accidental damage to pipes, caused by excavating.

Replace the old pipework and valves.

The filter, heating and pumps
Pool filter leaking
A water leak is found around the top of the filter, the o’ring has failed and needs replacing. If the filter sand is more than 3 years old, replacing the present filter media (sand) is recommended, and less costly while the o’ring is being eeplaced.

Possible causes of leaking

  1. Filter connections and gaskets damaged or degraded.
  2. Multi-port spider gasket, O’ring has degraded or damaged.
  3. Drain valve broken.
  4. Filter unit has cracked.
  5. Pump leaking through joints, broken gaskets, ceramic seal on the impeller

Renew the gaskets and o’rings, replacement pump and multi-port . It’s  rare does the filter need changing

Repairs or replacement? 
New pool liner
Replacement pool liner is installed and the swimming pool is filling. Once filled, the pool will look like new again.

Depending on the nature of the  leak in a liner pool, sometimes these can be repaired underwater.
However the liner maybe to old and brittle to repair and in the end there is no alternative but to install a replacement liner.

There is a range of liner colours and patterns to chose from.If the swimming pool is looked after, winterised & summerised correctly, has a good pool maintenance record, regular checks on correct pH, total alkalinity, chemical balance then serious leaks and repairs should be a  rare occurrence. A pool liner could last around 8 to 10 years or even longer in some cases. 

Liner Swimming Pools.

For more information on liner pools contact John Cox TnISPE (Cert).

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Swimming Pool Liners Replaced

Replacing your swimming pool liner and coping stones

After the last maintenance visit when your pool was winterised and closed down, you may have discussed having some renovation work done on your swimming pool.

One thought on top of the agenda is to change the liner. It may be that the pool liner is leaking, or the colour has faded.Pool line survey

When you do open the pool and if you decide to change the pool liner, consider these points below:

  • Before you have your old pool liner replaced, think about having the stone coping and deck surround pressure cleaned. There’s nothing worse than  to notice after the liner is installed that the surrounds look tatty and bedraggled…Pool renovation
  • Look around your swimming pool to see if there are any loose or chipped coping stones? You may want to replace these as they can be a danger to swimmers (Especially the younger swimmers and toddlers)
  • If there is loose or damaged pool coping, decide whether to change some or all of them.Pool liner replacement
  • If you favour changing all of the coping, your swimming pool will look like the first time it was installed, brand new, fresh and clean again.
  • Furthermore, ask the pool liner installers, (before the order goes through to the liner manufacturers) that you wish to look at a sample book, so you can consider an alternative pattern or colour.
  • Don’t forget about the pool decking. If you have paving around your pool you should check for loose, cracked or wobbly paving. These again are unsafe for pool users and should be repaired, relayed or replaced before the pool liner is installed and you start using your swimming pool.

It is nice to see an old swimming pool renovated and look revamped and new again.

swimming pool renovation
This renovated swimming pool has hinged ladders so the new automatic pool cover can close over the pool. Cover by Coverstar

A good idea is to take some photo’s of your swimming pool as it is now, during and when the pool liner is replaced and the pool is finished.

Call us if you need advice and we cover most areas of England and Wales. From Monmouthshire to Swansea up to Hereford Worcester across to Oxford down to Buckinghamshire and London back to Taunton Bristol and Gloucestershire..

By John Cox TnISPE Email for more info

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Renovating Swimming Pools

Renovating Swimming Pools

Now we are approaching spring it’s time to repair and renovate your swimming pool.

  • Refurbish a liner pool by replacing the vinyl liner.
  • Convert a leaking concrete pool to a liner pool.
  • Replacing a  pump that has stopped working, leaking pipework, skimmers, lights. damaged or loose stone coping, paving,
  • Re-tiling and grouting.
Pool needs refurbishing
Swimming pool in need of some TLC

Repair  the pool while it’s not in use or begin a renovation that’s been on your “to do list”.

Renovate your swimming pool to its original look:

  • Change old stone coping.Pool renovation
  • Clean and pressure wash around the pool.
  • Repair any structural defects.
  • Re-plaster defective surfaces.
  • install new pipework.
  • Change a frost damaged skimmer and returns.

Liner pool?

  • Replace the liner-lock.
  • New pool liner
  • Panel pools remove and replace rusted steel panels or change to block and liner construction.
  • Refurbish tiles and mosaics.
  • Install on-site vinyl lining.

Other choices are:

  1. Have your swimming pool renovated and looking brand new again.pool ready for renovation
  2. Build a new a new pool within the existing pool.
  3. Build a swimming pool in different location. This has been done before where the existing pool is beyond help.
  4. Choose to back-fill your existing pool and change it to a garden or put decking across in case one day you or the next owner of your house decides to want the pool reinstated.
  5. Change a pool to a pond this can be done to look like a natural pond with added plants.

Start your swimming pool renovating. Remember the longer it’s left the further the pool will degrade.

John Cox TnISPE Oxford Bristol Cardiff Gloucester Hereford Monmouthshire England and Wales


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Opening your swimming pool

10 tips on maintenance for the seasonal opening your swimming pool.

Debris cover
This pool doesn’t get to be opened for summer. Instead the swimming pool and surrounds receives a complete makeover with new liner installed, new coping, plant room, and a brand new automatic pool cover from Coverstar supplied by Certikin pool suppliers Below is the same swimming pool and surrounding landscape after the renovation.
Pool safety cover
Renovated swimming pool image was taken from the opposite end, and as you can see it looks completely different.

It’s that time to open up your swimming pool ready for swimming weekend BBQ’s, parties.

The warm weather is here so when you are ready to open your swimming pool read the 10 tips below on summerising your swimming pool.

Remove the debris cover from your swimming pool.
It is better if 2 people or more remove the winter debris cover.

swimming pool renovation
The same pool has hinged ladders so the automatic cover can close over the pool

Carefully remove the winter cover and place the stainless steel anchors in a bag.

Spread the winter cover out on the garden and clean loose debris and leaves with brush and a hose. Let the winter cover dry off to avoid mould staining.

After the cover has dried off fold up and store away with the anchors in a dry storage area.

Top up the pool water.

If you have a liner pool, then inspect for any defects or repairs needed in the pool liner like tears,  check the pool lining is not floating check the liner is fitting into the liner lock correctly.Pool in need of maintenance

Cleaning the stone copings and the pool surrounds.
Begin the pool maintenance, but before you do anything with your swimming pool, brush in sections with a water/light chlorine solution.

Be careful when using chemicals, and wear protective clothing when mixing to manufactures instructions before using.

Brush onto the coping and the pools surrounds and once treated gently hose down avoid splashing yourself and other objects like plants etc.  Next gently pressure clean and brush the copping and with water.

Brush the swimming pool walls down.
Begin with cleaning the tile band (Waterline) using the correct pool tile & liner cleaner.Automatic pool cover

Gently brush the pool walls using a pool brush to remove any green algae and other materials.

Check pool pump
Before priming and starting the pump, check the pump basket for leaves or debris then empty the basket.

Once the pool pump is circulating the pool water check for leaks

Swimming Pool filters. 

Do you know how old the filtration media is (usually sand)?

When it was last changed?

Filter sand becomes less and less effective over the years as the sharpness of the sand becomes rounded over time and less efficient in removing particles and other matter.Pool filter

Your pool would benefit from periodic changes of filter media at least every 3 to 5 years depending on how much the pool is used and other factors.

Use regular back washing and rinsing during the use of your swimming pool.

Use a leaf net for cleaning off the surface.
Remove any surface debris or leaves off the pool water with a leaf net and dispose.

Vacuum the pool floor.
Connect the pool cleaning equipment together. Fill the pool hose with pool water, place the hose in the skimmer with the skimmer basket still in, or attach to the vacuum point. Begin vacuuming the swimming pool.

Shocking, super-chlorinate, oxidising.
These terms all means the same, but most people say “to shock the pool water” because that is what a dose of chlorine does to any algae or bacteria. It’s the same as when you add bleach (which is composed of 5% chlorine, the rest is a carrier) to your kitchen.

Add the chlorine to the water and mix.

When mixing the chlorine granules remember to add chlorine to water and not the other way round). Obviously the amount you add depends on the condition of the pool water, and how effective the winterising treatments were, shock the pool water the pool appropriately and follow the chemicals instructions remember to have the filtration system running.

Testing the water is in balance.
For the chlorine to work effectively the pH, has to be at the correct levels between 7.2 and 7.6. Total Alkalinity need to be at the correct level (80-120 ppm) and Calcium Hardness levels, so use a test kit to check there preferable before you add the chlorine. Remember do not mix different swimming pool chemicals and always read the manufactures instructions.

Retest the water after 24 hours.
After the swimming pool cover has been removed, allowed to dry and stored away, the pump and filter has been checked, the pool is circulating, has been cleaned, the pool water tested and shocked, leave the pool running and retest the waters pH and chlorine level after 24 hours and dose the water as necessary. Once you have the swimming pool in a balanced condition, continue to regularly maintain your swimming pool to keep it healthy and crystal clear.

Enjoy your swimming pool.

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10 Top tips for winterising and closing down your swimming pool

10 Top tips for closing down your swimming pool

Now that winter is here you might be thinking about winterising your swimming pool for the coming cold months. We have some tips here at Osprey Pools to help guide you through the maze of things to do when you decide it’s time to winterise your swimming pool.Maintaining swimming pools

It is most important that you winterise your swimming pool,  as you don’t want freezing weather conditions damaging your pool equipment like filters and pumps, as this can end up costing you money,  finding water leaks all over the place. Indoor pools under  normal conditions don’t need closing.

You also need to maintain the water inside your swimming pool to keep it as clean as possible over the winter months so when the warm weather arrives it will be easier to get the pool up and running again.

Here are some of the top 10 tips for closing your swimming pool:

  1. When winterising and closing down your swimming pool,  make sure you check the pool water pH to make certain it’s balanced
  2. Check the total alkalinity (TA) and calcium hardness are at the right levels.
  3. Balancing the water in this way will help to protect the pool’s surfaces from etching and staining and it also activates the sanitiser to keep the water healthy.
  4. Add shock chlorine to your pool, (Follow manufactures instructions) and use winter swimming pool chemicals like algaecide to preserve the water in your pool to keep it looking clear and blue (but not dark green) ready for your summer season.
  5. Take off your solar pool cover, clean it down and either store it away or leave it on the roller, covered.Swimming pool cleaning
  6. Vacuum the pool, backwash and rinse the filter clean the pump basket out of debris.
  7. Now place a winter cover over the swimming pool, this will keep out most leaves and debris that might have normally fallen in. If you have children or pets you might want to consider a safety cover to stop anyone or thing accidentally falling into the swimming pool. These safety covers can save lives as children or pets and wild creatures can get tangled in a normal winter cover and drown. Automatic Pool covers are the best. Remember to place the automatic water pump to clear any water that accumulates on top of the cover.
  8. Make certain that you just have cleared out all of the water from your pump, heater, plumbing, and filter. Drain your filter by unscrewing the plug at the bottom of it. Remember to open the air valve for all the water to drain out. Do the same to the pool pump; try to make sure you get the last trickles of water out. You need to remove any chemicals from the feeder as these will damage your pool equipment.Pool in need of maintenance
  9. Before you begin this next operation you should check with your dealer or pool installer if the  water in your pool can be lowered . If it is fine to lower your pool water then drop the water level so that it is just below the skimmer and returns only. If your returns are positioned much lower down in the pool, you might want to consider asking your local pool dealer or pool company who installed your pool if this is OK to do.  Clean the skimmer basket out and remove from the skimmer place a plastic bottle about half filled with sand in the skimmer so it floats and place in the pool several plastic containers half filled with sand or similar so they float. this may help take up ice expansion during a freeze.
  10. Over the winter months you may need some intermittent maintenance on the pool. Check the balance of the pool water. Top up the pool water with more sanitiser and algaecide, there may be a need to remove some of the winter’s rain water that has topped the pool up over the months.Clean swimming pool water

These top tips are meant for pool owners in the UK and only as a general guide to assist you in closing your pool this winter. In other countries like the USA the climatic conditions can vary substantially across states and in some cases are very different from the climate here in the UK, where we have the jet streams and warm Atlantic current keeping us in a temperate climate for most of the year.

Make sure your read any and all instructions that came or are associated with your swimming pool including the labels on the pool chemicals and any pool equipment that came with it.

If all this winterising and closing the pool down for the winter is too time consuming or an inconvenience for you, or you wish to open your swimming pool for the spring and summer, then give us a call on 01600 861 851 we are local to Chepstow Usk Raglan and Monmouth. Also close to Lydney Ross-on-Wye and Cinderford and the Forest of Dean. We are willing to travel much further afield to Abergavenny Newport Cardiff Gloucester Hereford or Bristol.

John Cox TnISPE


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