Leak under spillway from spillover spa

[Fadam]

I have a problem with my spillover spa - there is a stone spillway the water is supposed to flow over, but instead is flowing under and down into the wall. It’s pretty clear that some type of sealant (silicone?) was preventing this and has peeled away in sections - does anyone know what this is and any tips for repairing it? Or what would be good for sealing the gap between the liner and the stone? My pb has proved pretty useless in helping me, so hoping to do it myself.

 

[1poolman1]

I have a problem with my spillover spa - there is a stone spillway the water is supposed to flow over, but instead is flowing under and down into the wall. It’s pretty clear that some type of sealant (silicone?) was preventing this and has peeled away in sections - does anyone know what this is and any tips for repairing it? Or what would be good for sealing the gap between the liner and the stone? My pb has proved pretty useless in helping me, so hoping to do it myself.

If you get ALL the silicone out of that area (nothing sticks to cured silicone), you could try SilkaFlex.

Sika 10.1 fl. oz. Sikaflex Crack Flex Textured Self-Leveling Crack Repair Polyurethane Sealant in Gray 7116110 - The Home Depot

Sikaflex Crack Flex Sealant is a one part, polyurethane sealant for permanently repairing cracks in horizontal concrete surfaces. It can be used in cracks up to 1 in. wide and provides long term durability.

www.homedepot.com