While I don't have a salt water pool, I do have bluestone coping and patio. There has been no flaking, but because it is outside and affected by the elements, it has stained somewhat. Leaves, the straps from the pool cover, discolorations from being in the shade, all have left some stains. But I love it and it's beautiful, so I would do it again.

We are looking to do bluestone coping and patio as well as it’s such a gorgeous classic look. But I keep getting feedback to do limestone coping because bluestone gets way too hot. Thoughts?

@iris936 I can offer feedback... Our pool build and landscaping included bluestone materials as well as other natural stone products. The bluestone is significantly hotter than our sandstone coping(by SUI, Stone Universe) and also hotter than the concrete decking. We installed bluestone as a wall cap near the pool and also bluestone flagstone in the landscaping. We have been very grateful that we were warned about the heat and did not use bluestone coping/decking, however our backyard is in full sun. If you had partial sun it might be tolerable.

hey guys here are 6 Things You Need Know When Using Bluestone Flooring Outdoors