Sealing Natural Rock Waterfall/Spillway

[Howren73]

my PB is about to seal the limestone rock around our spa and travertine coping around our pool. he suggested not sealing the rock on and under the spillway of the spa. we are going back and forth on whether to do SWG or BBB, and the rock we chose is a limestone from Iowa.

any advice will help!

 

[chiefwej]

SWG and limestone do not get along well.

 

[Howren73]

SWG and limestone do not get along well.

why is that? research I've done shows limestone does not dissolve in saltwater. are you suggesting if we go with the SWG we need to seal the spillway also?

 

[chiefwej]

My pool builder designed and built my pool as a salt pool. Based on his recommendations we used no stone of any kind. All stone can be be damaged by salt water. Some more than others, and some quicker than others. Texas limestone is subject to salt degrading it. I've seen limestone erode and watched flagstone flake and fall apart after six or seven years exposure in neighbor's SWG pools.

When my pool was built the PB said stone or salt, you can have either, but not both. I picked salt.

 

[Howren73]

ours isn't Texas limestone. the guy at the stone yard told me it was from Iowa