Winterizing Your Swimming Pool

Closing your swimming pool, also known as winterizing, is an important process. Taking the time to correctly winterize your swimming pool protects it during the off-season and makes opening it the following summer quick and easy. Skipping certain winterizing steps can lead to a pool owner’s nightmare; damaged pool liners, cracked pipes or unbalanced water chemistry. The industry experts at LinerWorld are here to give you winterizing tips to make sure your swimming pool is properly maintained for the off-season.

The best time to close your above ground swimming pool is when temperatures start to consistently drop to or below 60 degrees. In regards to which month, most pool owners agree that September is a good time for winterizing. Before you start closing, take the time to thoroughly clean the water of any and all debris, leaves, sand and twigs. After your pool is clean, balance the water chemistry levels. (Note: this must be done about one week before you plan on closing your pool.) Your chemical levels should be within the following:

  • pH: 7.2 – 7.6
  • Alkalinity: 80 – 120 ppm
  • Calcium Hardness: 180 – 220 ppm

Learn more about the specific chemicals (and accessories) needed to close your pool this winter by checking out our educational infographic, created by the winterizing experts at LinerWorld.

Once balanced, shock your pool water by following the directions on the packaging or by adding about one pound per 10,000 gallons of water. After your chlorine level becomes balanced, add winter algaecide. Next, you need to drain the water to about an inch or two below the skimmer box and return. It is extremely important to never let the water level go down too much further than that, otherwise your pool liner may shrink and become cracked. Once the water level is below the filter, empty your pool’s filter system of any remaining water, clean out any debris and dirt, and store the filter unit indoors for the winter.

Be sure to remove any ladders and stairs from your swimming pool, then the last thing to do is install the winter cover. Add any floats necessary to keep the cover from touching the water, then add the cover and secure it tightly using a cable and winch. Just like that, your swimming pool is winterized! If you have other questions about closing your pool, you can contact the professionals at LinerWorld. We’re here to help!

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