Groundwater Between Liner and Wall?

[thadius65]

Looking to see if anyone has ever had groundwater getting behind the liner along the wall. I know it is groundwater due to no measurable salinity of the water behind the liner in my SWG vinyl pool.

Thanks,

Ted

 

[ajw22]

You can wait and see if the ground absorbs the water or you can drop a hose behind the liner and pump the water out.

If it is a chronic problem, consider putting some well pits around the area that either drain to daylight or where you can put a pump in to remove groundwater from around your pool.

 

[Bill1974]

what is the patio surface in that area? is water draining onto this area from a gutter downspout or something else? If you have pavers, you might need to redo the polymetric sand that is between them. It limits how quickly water can get under the paver and gives it chance to run off. I have a gazebo that erodes the polymetric sand away and causes issues with water getting behind the liner. Needs a minor touch up ever couple of years in a couple of spots

 

[thadius65]

what is the patio surface in that area? is water draining onto this area from a gutter downspout or something else? If you have pavers, you might need to redo the polymetric sand that is between them. It limits how quickly water can get under the paver and gives it chance to run off. I have a gazebo that erodes the polymetric sand away and causes issues with water getting behind the liner. Needs a minor touch up ever couple of years in a couple of spots

This is far from the house, and the issues occur on the farthest walls away from the house. It is flat, poured concrete, though it does have very deep relief cuts. I am wondering if heavy rain has found its way through these and made its way behind the wall, and ultimately behind the liner. I have had to siphon out prior in a spot in the shallow end (same side), though this is at the deep end for these two spots.

 

[Bill1974]

Picture of the area and close of pictures with sometime for a size reference would be helpful. Can you fit a strip of foam backer rod in the relief to see if limiting the amount of water getting in improved the situation. This would be a temporary fix to see if it is the issue. Can you fit anything in the relief cut to see if it solid or hollow under the concrete?