Closing your Pool  –  The Basics

Gib-San offers a range of pool closing services to suit your needs.  Having a pool professional close your pool gives you peace of mind that all will be well with the equipment and water when you open in the spring. Here is an overview of the closing process. This is by no means a step by step guide.  Please contact us for added advise on closing your specific pool and for pricing and scheduling  having it done by the Gib-San Professionals.

  1. Clean out any leaves, insects, dirt and debris with your net and vacuum. Make sure you clean the skimmer and pump basket as well
  2. Clean the tile / water line with a tile or vinyl cleaner. it’s easier to do now than in the spring when it’s “caked” on
  3. Balance the water. This protects your pool and equipment from corrosion and scale. Bring in your water to Gib-San Pool and Hot Tub Centre for testing a week before closing.
  4. Purchase your Gib-San Pool Closing kit. One kit is good for pools up to 80,000 litres.  These kits ensure adequate chlorine and algaecide is in the pool water over the winter, as well as Stain and Scale control. If your pool is larger you can buy extra chemicals as required.
  5. Take out any remaining chlorine tablets, sticks and floaters. You don’t’ want these in your pool in stagnant water or near equipment.

At this point, this is where we recommend you use a pool professional. The following is an overview of what’s involved in properly winterizing the physical equipment.  It is by no means a guide and should not be taken as such.  Freezing water is the enemy over the winter.  It expands with such force it can crack pool pipes, filters and pumps. This is why it really pays to have a pool professional close your pool.

Once steps 1 – 5 are complete you need to lower your pool water 3 to 4 inches below the return fittings. It’s crucial you don’t’ completely empty a pool in the winter as the expansion of the water in the soil freezes and springtime water hydrostatic pressure can lift your pool!

All of your Equipment must be winterized. This includes removing plugs in the heater, pump, and filter.  Return eyeball fittings are to be removed. Pipe fittings are loosened to insert a blower hose from a compressor or strong Shop Vac to COMPLETELY clear the pools lines.  Lines to both the return jets and fountains and from the skimmer to the equipment must be COMPLETELY drained of water. Antifreeze is then poured into the skimmer and the return and flow lines. Winterizing plugs are used to seal off the return fittings and skimmer.  Expansion plugs or special threaded winter plugs may be used. If there is a main drain line, it will need to be blown out as well.

Steps must be taken to winterize the equipment.  Equipment such as pump and heaters have drain plugs to be removed. Drain the filter, and if it is a cartridge filter, the filters are to be removed, soaked in a Filter Cleaner solution for 24 hours and hosed clean.  Refer to the respective manuals for winterizing requirements for different equipment.

Finally put the pool to rest for the winter by covering it with a winter cover to keep leaves and debris out.  This can be a 2 or 3 person job!  Some covers consist of a large plastic cover held in place with water bags. An option is a safety covers that stretch across the pool like a trampoline. In addition to being a safety cover, these look better in your yard.  The wind and your leaf blower will most often keep this clear of leaves that often accumulate in the water of the other type of cover. 

Winterizing your pool can be a daunting task?  Why not call us to do it … that is a lot easier!   Please contact us for added advice on closing your specific pool and for pricing and scheduling professionally done by Gib-San.

Derrick Stricek
Store Manager

Have some stories to share about your pool closing experiences?  Email me at and I will put in another blog post for all to benefit from!


Do you have a question or comment about this blog or about the experience of buying a hot tub?
(*Indicates required field)