Sealing spillover stone

[Guy559]

Welcome to the forum.
I would not use any form of natural stone in or near the water such that it can get wet consistently.
Not only degradation, but calcium buildup and efflorescence is a concern.

@mknauss, I have an elevated spa above a pool. The majority of the spillover is hard tile but I've noticed that the natural stone paced on either side (that also wraps around the spa's exterior) is typically wet/damp, no doubt due to water contact 24/7.

Would you recommend I use a penetrating sealant to help protect this stone? If so, I could secure the spillover long enough to enable the stone to dry out, assess any issues (new pool started up 5 weeks ago...), correct if needed, seal, then start back up.

We saw some other model pools before moving forward with PB. This 'style' was used throughout. Thinking they wouldn't do it if it was a common failure point...but probably doesn't become an issue until after their warranty expires. So, ounce of prevention (sealing) vs a pound of cure? Or leave it be?

 

[mknauss]

You can try to seal it. It might help it last a bit longer. But I doubt it will do much for scaling or efflorescence.

I suspect you would have to reseal it often.