Inground pools made of concrete or gunite are susceptible to popping out of the ground if drainage is not done properly. If there has been a surplus of rain recently or your pool is located in a wet area, it is best not to try and drain the pool yourself at all.
Never completely drain a fiberglass or in-ground vinyl liner pool; doing so can damage the integrity of the pool surface or liner in the form of bowing or cracking. The best practice is to partially drain these types of pools. Always complete partial drains by 1/3 of the water at a time.
Empty pools are also susceptible to damage from exposure. Vinyl pools tend to contract when emptied, which can result in damage when they are refilled. Gunite or fiberglass pools can crack, and fiberglass pools may suffer bulging or splitting if drained. It may also void your warranty to drain your fiberglass pool.
Draining or emptying your pool of water can create a number of financial and structural headaches, including: Cracking the pool's shell. Damaging the interior lining or surface. Damaging the pool's coping and surrounding paving or timber work.
When too much pool water soaks into the ground, the resulting upward water pressure could crack the bottom of your pool or cause it to float right out of the ground.
Close the pool for winter – but don't drain it.
In winter, the water in your pool is still your friend. Especially when properly winterized, it helps to protect the pool liner, keep it clean and prevent unnecessary damage from debris, harsh weather and other factors.
Pool industry experts recommend you drain your pool and refill it every five to seven years. No two pools are alike, so there is no set number at which you must drain your pool.
Draining a pool can take up to 14 hours, depending on the size, so be sure to drain it on a day when you have sufficient free time. You need to be home to check on the pool, the hoses, and the pump frequently.
If ground water is not a problem a pool can be left empty for weeks or even months as long the hydrostatic relief in the bottom of the pool is open and functioning. If the time frame of the pool being empty gets into freezing weather there is real risk of freeze-thaw damage to surface of the pool.
Most in-ground pools will have to be drained and refilled at some point. But cleaning should not be the reason to do it. Pools will need to be drained and refilled every 5-7 years on average, or if there is a major necessary repair. Otherwise, avoid draining your pool if at all possible.
Much of this rain water penetrates into the ground, raising the inground water table, which creates a lot of hydrostatic pressure pushing up on the pool. After the water table raises enough, the pool may float or pop up out of the ground.
A well-maintained concrete pool should last around 50 years or more. And a well constructed in-ground concrete swimming pool should last a lifetime. But, a pool's liner or finish won't last long. And thus, an in-ground concrete pool will need to be resurfaced every 10 to 15 years.
In-ground pool draining requirements are similar to those of their above-ground counterparts. Drain the water down to no more than 6 inches from the bottom of the skimmer if you plan to use a standard floating winter cover. Use your pool filter, switched to the "Drain" setting, to empty the pool water.
Flooding Your Grass Is Not A Good Idea
The problem with draining your pool in the yard, if permitted by your local water regulatory laws, is that it will quickly reach its saturation level and increase the risk of flooding your lawn, drowning the roots of your grass, and attracting mosquitoes.
It typically costs $500 to $700 to drain and clean a pool and usually takes several days. Since it's more expensive, a pool company will try other common treatments to clean the pool first.
Some Northern Californians routinely drain their pools each winter so they don't have to maintain them. ... In some cases, draining a pool during winter in Northern California isn't just unnecessary—it can actually cause major problems.
Should I drain my pool to get rid of algae? Yes, you can because it saves time and money, but only if you do it properly. Use the main drain in your pool and drain water through the filter pump. Or rent or borrow the pump, place the hose down the street or storm drain, and drain.
An empty pool (or as little as 1/4 filled) and an exposed liner on a hot day can cause the liner to shrink from the heat and deem the liner useless. An empty pool is also susceptible to collapse. Especially, in high winds and/or bad weather.