Waterline tiling question

Mar 21, 2025
2
orlando, FL
Hi so my pool has been losing water at an alarming pace recently. My waterline tiling grout is in rough shape. While inspecting it today I lifted some coping to find a void spaced behind half behind the tiles. It appears the mortar is only halfway up the tiles is this normal?
 

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Welcome to TFP.

Not normal, but not surprising on an old pool. Lots of construction shortcuts are often taken.

Tile should have a full coating of thinset to adhere it to the bond beam.

You have some strange things with your coping, tile and bond beam interfaces.

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