You are in for a rough ride. We had the same problem every spring here in the notheast. Finally the liner ripped. We had to remove the liner, dig a big crush stone pit, put a sewer pipe in the pit, and run it off to a location at the back of the yard that was lower than the pit. The water comes out of that pipe every spring and the liner does not float. we were lucky due to the lower elevation out back, it allowed us to drain there. I have heard there are special valves that can be installed into certain pools such that if the hydrostatic pressure of the groud water is about to float the liner, the valve will open and let the water escape into the pool. I don't know how well this solution works though.
I don't know what to do once its floating but for people looking to prevent it - installing a french drain. Thanks, The Windsor-Browns
when this happens liner must come if can save good i am from NJ we would pump the water out then i would put rock and daed line this will keep the water down so your liner will not float when the liner gose back in the water will keep it down.try that manny advanced pool and spa service,inc
For our inground pool with what we found to be 3 undergroung springs we had to dig 3-4 foot below the original pool drain and install a sump pump that runs year round.
Make sure the water around the pool is lower than the water in the pool..
The pool liner pad is placed underneath the pool liner to prevent items from cutting through the liner. If the liner is already leaking, the liner pad will not stop the leak.
1. determine where your pool is leaking (liner or plumbing) and repair.
The sun and the chlorine are the worst things for a liner but there is not much you can do about that try dissolving the chlorine in a bucket of water before adding to pool it does help some but as i said there is not much to stop it.
A Hydrostatic valve is basically a plug that stop water coming down out of the pool, but when the water pressure under the pool gets higher then the pressure in the pool it will let water into the pool from underneath in order to stop the pool from floating in ground water.
You need to throw down a 3 inch layer of pool sand then level it out a put your liner down.
One way would be to install drain tile in the yard around the pool deck to carry excess ground water away from the pool.
Keep pumping it out as it builds up but don't block it of you may end up with a pool floating up out of the ground.
you have to stop the continued exposure to chlorine. the damage done is done and can not be reversed. put a liner in the pool to stop the leaks, expose the foundation and apply a protective membrane or simply backfill and abandon the pool.
Perhaps it is not a drain but a hydrostatic valve. These are fitted at the bottoms of pools to let ground water that has built up under an empty pool into the pool in order to stop it from floating out of the ground.
The time to replace a pool liner is when you have had enough of the liner. That sounds a little flippant, so what the heck does that mean? Well there are several reasons to replace a liner any of which are valid and all relate to you the owner. The first most common reason to replace a liner is the pool is leaking and will not stop. You have hired a diver and they cannot find any leaks and leaks and will not stop or there is a major cut in the liner. The next most common reason is the printed pattern on the liner is substantially faded or gone. This happens from UV light exposure and high chlorine levels over the years. Most people just hate looking at a faded liner and want to but vibrancy back in their pools appearance. Another scenario is the pool water chemistry has been poorly maintained and the liner is badly wrinkled. With chemistry there are two critical balances Total Alkalinity and Calcium Hardness. If the Total Alkalinity & pH are kept too low over to long a period of time the liner will wrinkle badly and this problem can only be corrected by replacing the liner. If the Calcium Hardness is maintained too low for to long a period of time the liner can become brittle to the point if you step on it the liner would crack. So it is recommended that you have your pool water professionally tested at least 3 times a pool season if your season is 6 months long and 6 times a year if you have a 12-month season. The least common reason is the people just hate the pool liner pattern and want something different. This can happen if someone buys a house and hates the liner pattern that is currently in the pool when they purchase the house so they replace it. The average life of a liner is about 10 years. The longest I have ever heard of a pool liner lasting was 25 years this was an in ground pool, of course there was no pattern in the liner for the last 15 years but the owners did not care. So as you can see the time to replace the liner is your choice. Keep in mind when replacing a liner the thicker the liner the more resistant to punctures the liner will be. If you are in a cold climate you will need a really thick liner. Standard mil thickness on in ground pool liners is usually 20 mil, 27/28 mil, 30 mil and 40 mil. For above ground pools life expectancy is 5-10 years. Liner thickness generally runs 16 mil, 20 mil, 22 mil and 27 mil.
If you mean what looks like a drain at the bottom of the pool and the pool is empty you are probably seeing the hydrostatic valve at work. it is there to allow ground water into the pool in order to stop it from floating in ground water that builds up under the pool when it is not full of water.