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 07922083001 or go to our website and email us Mobile website

We are local to Chepstow Usk Raglan and Monmouth. We carry out swimming pool surveys    Also placement liner services – Onsite lining – Swimming pool repairsPool renovations  and Install liner pools. we are 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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