SWCG and Flagstone Beach Entry Sealing

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B

bsperduto

Bronze Supporter
Jan 8, 2023
6
Arlington, TX
Pool Size
16000
Surface
Plaster
Chlorine
Liquid Chlorine
Hi,

We had our pool put in about a year ago now. We have a flagstone beach entry, coping and a rock waterfall. We were talked into chlorine instead of SWCG by our builder originally due to the flagstone. They suggested tabs but it's been converted to have a liquid stenner pump for about 6 months now. While it does work it seems like I'm just pouring money into it with about a week's supply costing about $35. We have a hot tub we'd like to use year round and with the pool being one body of water it seems I'll need to chlorinate it year round.

I'm seriously considering converting to salt but I'm concerned about the flagstone deteriorating. I'm looking at sealing it with the Stonetech Salt Water Resistant Sealer (STONETECH Salt Water Resistant Sealer | LATICRETE) but it seems more designed for splashes not full time contact with the salt water.

Does anyone have any experience or recommendations going with salt and a flagstone beach entry? I attached a picture for reference.

Thanks

Brian
 

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Brian,

I have a rent house saltwater pool that has flagstone coping..

When I first bought the house, we redid the plaster, tile, and coping.. It was a standard chlorine tab pool for about two years, before we converted over to a saltwater pool. During that two years, as a tab pool, some of the flagstone coping would shed very thin layers. Some stones had the shedding problem, and some did not, often right next to each other.

After we converted to saltwater, nothing changed. The good stones are still good, and the bad stones still shed.. The pool has been a saltwater pool for about 10 years now. The coping is still plenty thick and should last another 10 or 20 years.

If your stone is not looking bad now, converting now should not cause any additional problems. In my mind, sealing is not going to help...

Thanks,

Jim R.
 
The salt water won’t damage the submerged stones. And your pool is already a salt water pool from all the chlorine (and acid presumably) that you’ve been adding to it. Go ahead and measure the salinity … I bet you’ll be surprised at how high it is.

As @Jimrahbe said, your flagstone is what it is. If it’s not deteriorating now, it will be fine. The biggest cause of damage to natural stone work is water chemistry that is out of balance.
 
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