I have a flagstone spillway from the spa to the pool. When running the filter pump on a low speed it's not really enough flow to get the water going (there is a separate booster pump for this). Since it's all flagstone and grout, including flagstone around the waterline on the inside of the spa, I'm getting some seepage. Water trickles through the grout, under the flagstone ledge then down the spillway. And since it's a slow I'm seeing some calcium buildup.
So... I'm looking for a sealant product that I can apply along the spa's inside edge to prevent leaking through the grout. Any idea what would hold up in this environment?
Here is an image of what I'm trying to describe...
So... I'm looking for a sealant product that I can apply along the spa's inside edge to prevent leaking through the grout. Any idea what would hold up in this environment?
Here is an image of what I'm trying to describe...